Site Gazetteer
- Abbots Langley TL090015
- Albury Hall nr Bishop's Stortford TL426254
- Albury nr Bishop's Stortford TL435247
- Aldbury nr Tring SP965124
- Aldenham Golf Course TQ135985
- Aldenham Park TQ171965
- Aldenham Reservoir TQ170955
- Aldenham School TQ157975
- Aldenham TQ140985
- Aldwickbury Golf Course TL155145
- All of county
- Allen's Green TL455168
- Almshoe Bury nr Stevenage TL207254
- Alswick Hall nr Buntingford TL380293
- Amwell GP - Sheepcote Farm Lake TL373127
- Amwell GP - Ware/Thrifts GP TL367137
- Amwell GP/NR (exact water not specified) TL378126
- Amwell NR - Bittern Pool TL374131
- Amwell NR - Great Hardmead Lake TL378128
- Amwell NR - Hollycross Lake TL376132
- Amwell NR - Tumbling Bay Lake TL370135
- Amwell Roundabout TL370116
- Angerland Common (South Hatfield) TL216065
- Ansells End nr Kimpton TL159190
- Anstey TL405328
- Appspond Wood nr St Albans TL113054
- Apsley TL060050
- Archer's Green nr Tewin TL274135
- Ardeley TL310271
- Ashbrook nr Hitchin TL202278
- Ashridge Forest SP985125
- Ashwell TL268398
- Ashwell to Eyeworth Road (Northfield Road) TL261410
- Ashwell to Newnham Road (Newnham Way) TL255386
- Aspenden TL360283
- Aston End TL274242
- Aston TL275226
- Astonbury Wood nr Stevenage TL275214
- Ayot St Lawrence TL195168
- Ayot St Peter TL215151
- Babbs Green nr Ware TL394162
- Baldock TL245335
- Baldock to Wallington Road TL268334
- Baldwin's Wood/Flaunden Grove TQ013993
- Balls Wood nr Hertford Heath TL344105
- Barkway TL385355
- Barley TL400385
- Barwick Ford TL385189
- Barwick TL385194
- Bassus Green nr Walkern TL302259
- Batch Wood nr St Albans TL138093
- Batchworth Lake nr Rickmansworth TQ057940
- Batford TL145155
- Batlers Green nr Radlett TQ156986
- Bayford TL310085
- Bayfordbury TL315105
- Bedmond TL099038
- Beechengrove Wood nr Chorleywood TQ047971
- Bell Bar nr Brookmans Park TL255052
- Bell Lane nr London Colney TL180030
- Bells Hill nr Bishop's Stortford TL484213
- Bencroft Wood nr Wormley West End TL330064
- Bendish Lodge nr Whitwell TL165225
- Bendish nr Whitwell TL165215
- Benington TL300235
- Bentley Heath nr Potters Bar TQ247997
- Berkhamsted Common SP995115
- Berkhamsted SP990080
- Berkhamsted Sewage Treatment Works TL013068
- Berrybushes Wood nr Kings Langley TL067008
- Berrygrove Wood nr Aldenham TQ130985
- Birch Green TL294114
- Birch Wood nr St Albans TL119057
- Birchall nr Welwyn Garden City TL272117
- Bishop's Stortford - Dane Park TL475216
- Bishop's Stortford - Stortford Park TL470212
- Bishop's Stortford College TL481214
- Bishop's Stortford TL490210
- Bishop's Wood nr Rickmansworth TQ067917
- Black Bridge Landfill site near Wheathampstead TL195145
- Blackbirds Farm nr Radlett TQ145998
- Blackbirds SF nr Radlett TL144004
- Blackhorse Lane nr South Mimms TL216020
- Blackmore End nr Kimpton TL170167
- Blagrove Common nr Sandon TL328337
- Blanche Farm nr Ridge TL220001
- Bloodhound Wood nr Bishop's Stortford TL467227
- Borehamwood - Aberford Park TQ192975
- Borehamwood TQ198970
- Bottom Wood nr Maple Cross TQ022938
- Bourne End TL020060
- Bovingdon TL015037
- Bower Heath nr Harpenden TL145165
- Box Wood nr Hoddesdon TL354096
- Box Wood nr Stevenage TL270263
- Boxmoor nr Hemel Hempstead TL045061
- Bozen Green nr Braughing TL403279
- Bragbury End nr Stevenage TL269209
- Bramfield Park Wood TL285155
- Bramfield Woods TL285167
- Bramfield village TL292156
- Brands Farm nr Much Hadham TL414191
- Braughing Bone TL400258
- Braughing Friars TL416245
- Braughing Meads TL387245
- Braughing TL398252
- Breachwood Green TL151221
- Brent Pelham TL434307
- Brickendon TL321080
- Brickendonbury TL330104
- Bricket Wood Common TL130010
- Bricket Wood TL130022
- Brickground Wood nr Bramfield TL279167
- Bridgefoot nr Potters Bar TL233009
- Briggens nr Roydon TL415114
- Broad Colney Lakes TL177035
- Broad Colney TL180030
- Brocket Park TL213128
- Bromley Common nr Watton at Stone TL311206
- Brookmans Park TL243040
- Broxbourne GP - Admiral's Walk Lake TL377081
- Broxbourne GP TL380075
- Broxbourne TL370070
- Broxbourne Woods (exact wood name not specified) TL340080
- Broxbourne Woods - Bramble's Wood TL337081
- Broxbourne Woods - Broad Riding Wood TL341074
- Broxbourne Woods - Broxbourne Wood TL326072
- Broxbourne Woods - Cowheath Wood TL335078
- Broxbourne Woods - Danemead Wood TL348078
- Broxbourne Woods - Highfield Wood TL345085
- Broxbourne Woods - Hoddesdon Park Wood TL350085
- Buckland TL355335
- Bucks Hill nr Chipperfield TL053005
- Bulbourne nr Tring SP934137
- Bull's Green nr Welwyn TL272173
- Bullen's Green TL213062
- Bullsmill nr Waterford TL315160
- Bunkers Hill Quarry nr Bayford TL301095
- Bunkers Park nr Hemel Hempstead TL083058
- Buntingford TL363295
- Burn's Green nr Benington TL308227
- Burnham Green nr Welwyn TL261166
- Bury Green TL452212
- Bury Lake nr Rickmansworth TQ053938
- Bush Wood nr Weston TL259316
- Bushey Hall Golf Course TQ123969
- Bushey Heath TQ145945
- Bushey TQ140950
- Bygrave TL265361
- Caddington Hall nr Markyate TL065173
- Cadwell nr Ickleford TL189322
- Camfield Place nr Hatfield TL268069
- Carpenders Park TQ123934
- Cassiobury Park TQ090970
- Chadwell Springs Golf Course nr Ware TL351135
- Chandler's Cross nr Watford TQ065983
- Chapmore End nr Ware TL328164
- Charlton nr Hitchin TL179280
- Cherry Green nr Buntingford TL355260
- Chesfield Park nr Stevenage TL245276
- Cheshunt - New River/Church Lane TL353029
- Cheshunt GPs (exact water not specified) TL370030
- Cheshunt GPs - Ashley Pit TL370042
- Cheshunt GPs - Bowyers Water TL367015
- Cheshunt GPs - Cheshunt Lake TL369027
- Cheshunt GPs - Long Pit TL371043
- Cheshunt GPs - North Met Pit TL369033
- Cheshunt GPs - Slipe Lane Pits TL370053
- Cheshunt GPs - Turnford Pit South TL369039
- Cheshunt Marsh TL369009
- Cheshunt Park TL351040
- Cheshunt Reservoir TL354033
- Cheshunt TL365023
- Chess Valley N (NW of M25) TQ035980
- Chess Valley S (SE of M25) TQ055960
- Childwick Bury nr St Albans TL140101
- Chiltern Green TL138194
- Chiltern Hall nr Luton (Herts/Beds) TL134207
- Chipperfield Common TL045013
- Chipperfield TL045017
- Chipping nr Buntingford TL356320
- Chiswell Green nr St Albans TL135045
- Chorleywood Common TQ032963
- Chorleywood House Estate LNR TQ036971
- Chorleywood TQ020960
- Churchend Common nr Walkern TL285272
- Clapgate TL442249
- Clapgate nr Bishop's Stortford TL442250
- Clay End nr Benington TL306251
- Clothall Common TL265335
- Clothall nr Baldock TL270319
- Cockhampstead nr Braughing TL418253
- Codicote Bottom TL208179
- Codicote TL217182
- Cold Christmas nr Ware TL376169
- Cold Hall nr Broxbourne TL349069
- Cole Green Tip TL265112
- Cole Green area TL282115
- Coleman Green nr Wheathampstead TL188125
- Colliers End nr Standon TL371208
- Colney Heath (common) TL201058
- Colney Heath (village) TL204064
- Colney Park TL174025
- Colney Street nr Radlett TL155024
- Comb's Wood nr Benington TL319218
- Combe Wood nr Shenley TL189012
- Coombe Road nr Therfield TL320374
- Coopers Green GPs - Beech Farm GP TL189089
- Coopers Green GPs - Stanborough GP TL215110
- Coopers Green GPs - Sutton Farm GP TL195101
- Coopers Green GPs - main GP TL199099
- Coopers Green Lane nr St Albans TL210110
- Cooters End Lane nr Harpenden TL125160
- Cornhill Common nr Walkern TL296276
- Cottered TL320284
- Cottered Warren TL328278
- Coursers Road nr Colney Heath TL200045
- Cow Roast nr Tring SP958103
- Cradle End nr Bishop's Stortford TL459219
- Cromer Hyde nr Lemsford TL208123
- Cromer nr Walkern TL296283
- Croxley Common Moor TQ080947
- Croxley Green TQ075955
- Croxley Hall Lakes nr Rickmansworth TQ070943
- Cuffley TL302030
- Cumberlow Green nr Sandon TL301305
- Dancers Hill nr Potters Bar TQ234995
- Dane Bridge nr Much Hadham TL440194
- Dane End TL324210
- Danesbury nr Welwyn TL234170
- Dassels nr Buntingford TL388277
- Datchworth TL270185
- Dawley Wood nr Tewin TL263155
- Deadman's Hill nr Sandon TL292370
- Deard's Wood nr Welwyn TL230191
- Dellsome Bottom nr Hatfield TL225058
- Derry's Wood nr Wormley West End TL319053
- Digswell Lake TL243148
- Digswell Meadow TL240153
- Digswell TL245151
- Dobb's Weir nr Hoddesdon TL384083
- Dorney Wood nr Braughing TL410237
- Dowdell's Wood nr Welwyn TL207153
- Drop Lane nr Bricket Wood TL148014
- Dudswell nr Berkhamsted SP965096
- Dyes Farm nr Langley TL218233
- Dyrham Park nr Potters Bar TQ225985
- Easneye Wood TL385135
- East End Green TL296107
- East Hyde TL130170
- East Wood nr Bishop's Stortford TL462215
- Eastwick TL435117
- Ellenbrook Fields TL205090
- Elstree Aerodrome TQ160966
- Elstree TQ175952
- Emanuel Pollards nr Wormley West End TL335064
- Epping Green nr Little Berkhamsted TL294068
- Essendon TL275085
- Fanhams Hall nr Ware TL372157
- Felden TL045055
- Fir & Pond Woods nr Potters Bar TL276008
- Flamstead End nr Cheshunt TL345037
- Flamstead village TL081154
- Flamsteadbury Farm nr Redbourn TL092122
- Flaunden TL015009
- Foxholes GP nr Hertford TL345125
- Foxley Grove nr Welwyn TL244165
- Frithsden Beeches TL000105
- Frogmore GP nr Stevenage TL285205
- Frogmore Hall nr Stevenage TL289207
- Frogmore Lakes nr St Albans TL150033
- Furneux Pelham TL435280
- Gaddesden Row TL055125
- Galley Hill nr Lilley (Herts/Beds) TL098272
- Garston nr Watford TQ120999
- Gatesbury nr Puckeridge TL396239
- Gibraltar Farm nr Luton TL096172
- Gilston Park nr Harlow TL440130
- Gobions Wood nr Brookmans Park TL255035
- Goffs Oak TL320030
- Goldings Wood nr Hertford Heath TL360115
- Gorhambury Estate nr St Albans TL115078
- Gosmore Hill nr Hitchin TL185257
- Graveley nr Stevenage TL235281
- Great Amwell TL368125
- Great Gaddesden TL040138
- Great Hormead Bury TL399297
- Great Hormead TL402300
- Great Munden nr Puckeridge TL358241
- Great Offley TL145270
- Great Plantings Wood nr Bishop's Stortford TL466217
- Great Wymondley TL215286
- Green End nr Braughing TL393252
- Green End nr Sandon TL329334
- Green Tye nr Much Hadham TL444184
- Greenbroom Spring Wood nr Rickmansworth TQ060932
- Greenhams Pit nr Waterford TL306149
- Grove Mill nr Watford TQ087986
- Guilden Morden SP268429
- Gustard Wood nr Wheathampstead TL175155
- Haberdashers' Boys' School nr Elstree TQ168967
- Haberdashers' Girls' School nr Elstree TQ170964
- Hadham Cross TL425185
- Hadham Ford TL436218
- Hadham Hall TL452232
- Hadham Park TL462223
- Hall's Green nr Stevenage TL275287
- Hambridge Way nr Pirton TL160317
- Hamels Meads nr Puckeridge TL388246
- Hamels Park Farm nr Puckeridge TL377249
- Hamels Park nr Puckeridge TL375246
- Hammonds Farm nr Sandridge TL186114
- Hampermill Lake nr Watford TQ095942
- Hanbury Manor nr Ware TL352164
- Hare Street nr Ardeley TL310285
- Hare Street nr Buntingford TL390295
- Harebreaks Wood nr Watford TQ102992
- Harepark Spring nr Ayot St Lawrence TL190165
- Harlow - Burnt Mill TL445112
- Harmergreen Wood nr Welwyn TL253170
- Harpenden Common TL140130
- Harpenden Sewage Treatment Works TL150145
- Harpenden TL140150
- Harper Lane nr Radlett TL165017
- Harperbury nr Radlett TL170018
- Hastoe SP918094
- Hatfield - University of Hertfordshire TL215074
- Hatfield Aerodrome (disused) TL205090
- Hatfield Garden Village TL217098
- Hatfield Park - Home Park TL244092
- Hatfield Park - Millward's Park TL237068
- Hatfield Park TL240095
- Hatfield TL220080
- Haultwick nr Puckeridge TL338232
- Hawkins Wood nr Sandon TL338350
- Hay Street nr Braughing TL395289
- Hazelend Wood nr Bishop's Stortford (Herts/Essex) TL494238
- Heartwood Forest - Arboretum TL175119
- Heartwood Forest - E of B651 TL175115
- Heartwood Forest - Hillend Farm TL168117
- Heartwood Forest - Langley Wood TL162109
- Heartwood Forest - Magical Wood TL160113
- Heartwood Forest - Orchard TL175108
- Heartwood Forest - Round Wood TL162121
- Heartwood Forest - W of B651 TL165115
- Heartwood Forest - Well & Pudler's Wood TL158115
- Heartwood Forest - exact location not specified TL166113
- Hebing End nr Benington TL309227
- Helham Green nr Ware TL400160
- Helicon Lake nr Maple Cross TQ038909
- Hemel Hempstead TL050065
- Heronsgate nr Rickmansworth TQ025945
- Hertford - Bengeo TL320135
- Hertford - Hartham TL326132
- Hertford Heath TL350105
- Hertford TL325125
- Hertingfordbury TL307122
- Hexton TL106308
- Hickman's Hill nr Baldock TL268315
- High Canons nr Borehamwood TQ207990
- High Cross nr Standon TL364185
- High Scrubs nr Wigginton SP927085
- High Wood nr Benington TL285235
- High Wych nr Sawbridgeworth TL464144
- Highfield Farm nr Tyttenhanger TL180055
- Hilfield Farm nr Bushey TQ150965
- Hilfield Park Reservoir TQ156960
- Hillend Farm nr Hatfield TL256094
- Hinxworth TL235405
- Hitch Wood nr St Paul's Walden TL193235
- Hitchin - Westmill TL175303
- Hitchin TL190300
- Hixham Hall nr Furneux Pelham TL454268
- Hoddesdon - Rye Park TL378093
- Hoddesdon TL375085
- Hoggate's Wood nr Bishop's Stortford TL479226
- Holbrook Farm nr Benington TL281225
- Hollingson Meads nr Harlow TL457123
- Holt Farm nr Chiswell Green TL126033
- Holt Wood nr Chiswell Green TL117036
- Holwell Hyde nr Welwyn Garden City TL262113
- Holwell nr Hitchin TL165334
- Hook's Cross nr Stevenage TL280206
- How Wood nr Bricket Wood TL139037
- Howe Green nr Essendon TL285095
- Hudnall Corner nr Great Gaddesden TL014133
- Hunsdon Meads TL418110
- Hunsdon nr Harlow TL419144
- Hunsdonbury TL414131
- Hunton Bridge nr Watford TL083006
- Hyde Mill Farm nr Harpenden TL132169
- Ickleford Common TL185335
- Ickleford Cress Beds TL187326
- Ickleford Sewage Treatment Works TL185317
- Ickleford TL183317
- Jack's Hill nr Letchworth TL237297
- Kelshall nr Royston TL329364
- Kettle Green nr Much Hadham TL416182
- Kimpton Hoo TL195196
- Kimpton Mill TL198185
- Kimpton TL175184
- King's Meads nr Hertford TL340135
- King's Walden TL162235
- King's Wood nr Puckeridge TL371233
- Kings Langley - Longspring Wood TL091035
- Kings Langley Lake TL073036
- Kings Langley TL071028
- Kinsbourne Green nr Harpenden TL114161
- Knebworth East TL252202
- Knebworth Golf Course TL244215
- Knebworth House & Park TL230210
- Knebworth TL249203
- Knebworth Woods (exact wood name not specified) TL227222
- Knebworth Woods - Burleigh Grove TL225217
- Knebworth Woods - Cannock's Wood TL227226
- Knebworth Woods - Crouch Green TL212205
- Knebworth Woods - Graffridge Wood TL215210
- Knebworth Woods - Holl Lays Wood TL209207
- Knebworth Woods - Newton Woods TL230220
- Knebworth Woods - Pigeonswick TL227228
- Knebworth Woods - Watery Grove TL230230
- Knights Hill Farm nr Buntingford TL372256
- Ladywalk Wood nr Maple Cross TQ029936
- Lamer Park nr Wheathampstead TL183159
- Lammas Wood nr Langley TL208225
- Lamsden Common nr Watton at Stone TL297212
- Langley nr Stevenage TL216224
- Langleybury nr Watford TL078000
- Latchford nr Standon TL394205
- Leasey Bridge nr Wheathampstead TL160146
- Leavesden Green nr Watford TQ098999
- Lemsford Springs TL222122
- Lemsford TL219122
- Letchmore Heath TQ152979
- Letchworth - Norton Common TL219334
- Letchworth Sewage Treatment Works TL209347
- Letchworth TL220320
- Letty Green TL285109
- Levens Green nr Puckeridge TL359223
- Lilley Bottom TL135252
- Lilley TL118268
- Linces Farm nr Welwyn TL221163
- Little Almshoe nr Hitchin TL199259
- Little Berkhamsted TL293078
- Little Gaddesden SP992134
- Little Hadham TL440228
- Little Hormead nr Buntingford TL400290
- Little Offley TL130285
- Little Plantings Wood nr Bishop's Stortford TL464218
- Little Wymondley nr Stevenage TL215275
- Lockley Farm nr Welwyn TL242164
- Lockleys Wood nr Welwyn TL247159
- Loefield Grove nr Watton at Stone TL307215
- London Colney TL184038
- Long Deans NR TL077050
- Long Marston SP895157
- Long Meadow nr Bishop's Stortford TL463220
- Lord's Wood nr Hunsdon TL413123
- Loudwater nr Rickmansworth TQ056965
- Lower Woodside nr Hatfield TL245062
- Luffenhall nr Walkern TL294293
- Lye End Farm nr Buntingford TL334321
- Lynsters Farm nr Maple Cross TQ035920
- Lynsters Lake nr Maple Cross TQ039916
- Mackerye End nr Harpenden TL158158
- Mangrove Hall nr Luton TL124241
- Maple Cross TQ030925
- Maple Lodge NR (members only) TQ037925
- Mardley Heath nr Welwyn TL244182
- Mardleybury nr Welwyn TL261185
- Markyate TL060165
- Marshcroft Farm nr Tring SP940130
- Mathams Wood nr Bishop's Stortford TL463183
- Mazebeard Spring nr Lilley TL125275
- Meesden TL431325
- Merry Hill nr Bushey TQ130940
- Micklefield Green nr Sarratt TQ047985
- Micklefield Hall nr Sarratt TQ052974
- Mill End, nr Sandon TL335325
- Mill Green SF nr Hatfield TL244101
- Mill Green nr Hatfield TL241098
- Millhouse Farm nr Bedmond TL108035
- Mimms Woods (exact wood name not specified) TL219026
- Mimms Woods - Cangsley Grove TL220035
- Mimms Woods - Hawkshead Woods TL219027
- Mimms Woods - Mymmshall Wood TL223025
- Mimms Woods - Redwell Wood TL213026
- Mimmshall Brook TL232029
- Moat Wood nr Hunsdon TL403139
- Mobbs Hole nr Ashwell TL261438
- Model Farm nr Kings Langley TL068004
- Monks Green nr Brickendon TL334085
- Moor Green nr Buntingford TL327268
- Moor Lane nr Rickmansworth TQ078942
- Moor Mill nr Radlett TL151024
- Moor Park nr Rickmansworth TQ080933
- Mortgrove Farm nr Hexton TL102282
- Much Hadham TL428195
- Munden Estate nr Bricket Wood TL134000
- Nash Mills nr Hemel Hempstead TL068046
- Nashe's Farm nr St Albans TL180097
- Nasty nr Puckeridge TL359245
- Nettleden Lodge nr Great Gaddesden TL008109
- Newgate Street nr Cuffley TL301051
- Newgate Wood nr Hunsdon TL400135
- Newhole Farm nr Ware TL381150
- Newnham TL243376
- Newsells nr Barkway TL387373
- Nobland Green nr Wareside TL401117
- Nomansland nr Wheathampstead TL171128
- North Mymms Park TL215048
- North Mymms TL222045
- North Watford TQ110990
- Northaw Great Wood TL285040
- Northaw TL280023
- Northchurch Common SP975105
- Northchurch SP974088
- Norton Bury nr Letchworth TL235229
- Norton Green nr Stevenage TL225235
- Norton nr Letchworth TL231344
- Nup End nr Knebworth TL225198
- Nuthampstead TL410346
- OTHER (give details in comments box)
- Oak Farm nr St Albans TL184090
- Oaklands GP (infilled) nr St Albans TL184084
- Oaklands nr St Albans TL184078
- Oaklands nr Welwyn TL245175
- Offley Bottom TL163288
- Offley TL143270
- Old Hall Green nr Standon TL370222
- Old Knebworth TL233205
- Old Parkbury nr Radlett TL163023
- Otterspool nr Aldenham TQ129995
- Oughtonhead nr Hitchin TL165305
- Oxhey Park TQ114954
- Oxhey TQ123955
- Oxhey Woods TQ108927
- Oxshott Hill nr Benington TL290220
- Oylers Farm nr Cheshunt TL351008
- Panshanger Aerodrome TL269131
- Panshanger Park TL290130
- Park Street nr St Albans TL149032
- Park Wood nr St Albans TL127054
- Patchetts Green nr Aldenham TQ142975
- Patmore Heath TL443257
- Pendley Farm & Manor nr Tring SP943118
- Perry Green nr Much Hadham TL438175
- Perry Wood nr Bramfield TL292180
- Peters Green nr Harpenden TL141190
- Picotts End nr Hemel Hempstead TL052090
- Piggottshill Wood nr Harpenden TL154142
- Pirton TL145315
- Pishiobury Park TL475137
- Pitstone No 2 Quarry SP945140
- Plashes Wood nr Standon TL380205
- Pollards Hill nr Maple Cross TQ020935
- Pope's Farm nr Hatfield TL260076
- Poplars Green nr Tewin TL279134
- Post Wood nr Ware TL362132
- Potten End TL018090
- Potter's Green nr Standon TL351207
- Potters Bar - Oakmere Park TL263013
- Potters Bar TL250010
- Potters Crouch Plantation TL104052
- Potters Crouch nr St Albans TL116052
- Prae Mill nr St Albans TL128086
- Prae Wood nr St Albans TL120070
- Presdales Wood nr Ware TL360133
- Preston TL180247
- Priest Wood nr Bramfield TL302155
- Prior's Wood nr Kimpton TL186173
- Priory Park nr Hitchin TL183283
- Pryors Wood nr Stevenage TL265264
- Puckeridge TL386234
- Purwell Meadows LNR nr Hitchin TL199298
- Purwell Ninesprings nr Hitchin TL201298
- Puttenham nr Tring SP885148
- Pye Corner nr Harlow TL449122
- Pynesfield North Lake nr Maple Cross TQ036912
- Pynesfield South Lake nr Maple Cross TQ036910
- Quickswood Farm nr Baldock TL277329
- Quinbury Farm nr Braughing TL396261
- Rabley Heath nr Welwyn TL235193
- Rabley Park nr Shenley TL208012
- Radlett Aero GP TL155037
- Radlett TL165001
- Radwell nr Baldock TL230359
- Raffin Green nr Datchworth TL275194
- Redbourn Golf Course TL108141
- Redbourn TL105125
- Redbournbury TL120108
- Redericks Farm nr Harlow TL464128
- Redhill nr Wallington TL300330
- Redwell Wood Farm nr South Mimms TL207027
- Reed TL360360
- Rib Valley Lakes TL337158
- Rickmansworth - Mill End TQ038945
- Rickmansworth TQ055945
- Rickney's Quarry nr Hertford TL320155
- Ridge TL215004
- Ringshall (Herts/Bucks) SP985145
- River Lee at Ware TL347143
- River Rib/Fabdens nr Ware TL372173
- Rivers Orchard nr Sawbridgeworth TL473145
- Roe Hyde nr Hatfield TL211071
- Rossway Park nr Berkhamsted SP958072
- Rothamsted Experimental Station TL120137
- Rothamsted Park nr Harpenden TL130138
- Roughground Wood nr Standon TL357213
- Rowley Farm nr Borehamwood TQ211980
- Rowneybury nr Harlow TL474133
- Roxley Court nr Letchworth TL226296
- Royal Oak Lake nr Maple Cross TQ034917
- Roydon (Herts/Essex) TL405105
- Royston TL360410
- Rumball's Farm nr Bishop's Stortford TL473198
- Rush Green / Letchmore Farm nr Stevenage TL211235
- Rush Green nr Buntingford TL338251
- Rush Green nr Hertford TL350128
- Rushden nr Baldock TL305315
- Rusling End nr Langley TL209212
- Rye End nr Kimpton TL198190
- Rye Meads TL390100
- Sacombe Green TL343196
- Sacombe Park TL335185
- Sacombe TL332195
- Salisbury Hall nr London Colney TL195028
- Sandon TL320344
- Sandpit Green nr Berkhamsted SP995065
- Sandridge nr St Albans TL170105
- Sandridgebury nr St Albans TL163105
- Sarratt Bottom (Herts/Bucks) TQ032989
- Sarratt Mill TQ035978
- Sarratt TQ042995
- Sauncy Wood nr Harpenden TL150160
- Sawbridgeworth Marsh (Herts/Essex) TL487154
- Sawbridgeworth TL480150
- Sawtrees Wood nr Standon TL387186
- Scales Park nr Nuthampstead TL416336
- Scotsbridge Mill Watercress Beds nr Rickmansworth TQ063956
- Selebroom Wood nr Panshanger TL294135
- Serge Hill nr Bedmond TL108042
- Shafford Farm nr St Albans TL126093
- Shaftenhoe End nr Barley TL408378
- Shaw Green nr Baldock TL298322
- Shaw Wood nr Patmore Hall TL460254
- Shenley TL190005
- Shenleybury TL183015
- Sherrardspark Wood nr WGC TL230138
- Shilley Green Farm nr Langley TL205231
- Silver Hill nr Borehamwood TQ200993
- Sleapshyde nr Colney Heath TL200066
- Slip End nr Ashwell TL286370
- Smallford Lake nr St Albans TL198071
- Smallford nr St Albans TL195077
- Smug Oak Lane nr Bricket Wood TL143023
- Sopwell nr St Albans TL155055
- South Mimms TL224012
- South Oxhey TQ118938
- Southern Green nr Buntingford TL312317
- Southridge nr Shenley TL207019
- Spellbrook TL487175
- Spital Wood nr Wallington TL282332
- St Albans - Jersey Farm Woodland Park TL169098
- St Albans - Bernards Heath TL152083
- St Albans - Jersey Farm TL174097
- St Albans - Marshalswick TL171088
- St Albans - Watercress LNR TL153063
- St Albans TL145071
- St Edmund's College nr Standon TL371219
- St Ippollitts nr Hitchin TL198271
- St John's Wood nr Walkern TL310257
- St Margarets TL378119
- St Paul's Walden TL194223
- Stagenhoe nr Whitwell TL185228
- Stanborough Lakes nr WGC TL230110
- Stanborough Reedmarsh TL231103
- Standalone Farm nr Letchworth TL209338
- Standon Green End Farm TL360200
- Standon Green End TL369199
- Standon Lodge Farm nr Much Hadham TL406208
- Standon Lordship TL393214
- Standon TL395223
- Stanstead Abbotts Lakes (N or S not specified) TL388111
- Stanstead Abbotts Lakes - S lake TL397105
- Stanstead Abbotts TL390117
- Stanstead Innings (exact water not specified) TL388112
- Stanstead Innings - Abbotts Lake TL387111
- Stanstead Innings - Banjo Lake TL385111
- Stanstead Innings - Stock Pit TL385113
- Stapleford TL310170
- Stevenage - Broadwater TL255215
- Stevenage - Chells Manor TL268253
- Stevenage - Fairlands Valley Park - S of Six HIlls Way TL248233
- Stevenage - Fairlands Valley Park - exact location not specified TL253241
- Stevenage - Fairlands Valley Park Lakes - N of Six HIlls Way TL253244
- Stevenage - Kodak Waste Site TL229239
- Stevenage - Monk's Wood/Whomerley Wood TL245232
- Stevenage - Pin Green TL257253
- Stevenage TL234243
- Stocker's Farm TQ052933
- Stocker's Lake TQ046935
- Stocking Pelham TL452292
- Stocking Wood nr Bishop's Stortford TL458211
- Stonebury Farm nr Buntingford TL385282
- Stonesley Wood nr Stevenage TL249285
- Stowes Wood nr Bedmond TL102028
- Symondshyde Farm nr St Albans TL199112
- Symondshyde Great Wood - Chalkdell Wood TL194113
- Symondshyde Great Wood - Hammond's Wood TL190106
- Symondshyde Great Wood - Titnol's Wood TL194117
- Symondshyde Great Wood - exact location not specified TL195110
- Tea Green nr Luton TL136232
- Tednambury nr Sawbridgeworth TL492169
- Telegraph Hill nr Lilley TL120288
- Temple End nr Hitchin TL165275
- Tenements Farm nr Bedmond TL105031
- Tewin Fish Farm TL269138
- Tewin Mill TL272137
- Tewin TL271148
- Tewin Water TL254147
- Tewin Wood TL270164
- Tewinbury Reserve TL264140
- Tharbies Farm nr Sawbridgeworth TL470161
- The Common nr Patmore Hall TL456245
- The Folly nr Wheathampstead TL167146
- The Frythe nr Welwyn TL226148
- The Grove nr Watford TQ082988
- The Withey Beds nr Rickmansworth TQ078940
- Theobalds Park nr Enfield TL344008
- Therfield Heath TL345403
- Therfield nr Royston TL336372
- Thorley Street nr Bishop's Stortford TL489191
- Thorley Wash nr Bishop's Stortford TL487183
- Thorley nr Bishop's Stortford TL475188
- Thrift Farm nr Therfield TL320392
- Throcking nr Buntingford TL336301
- Thunderfield Grove nr Wormley West End TL338052
- Thundridge TL359173
- Tilehouse North Lake nr Maple Cross TQ037901
- Tingley Wood nr Pirton TL138305
- Titmore Green nr Stevenage TL214266
- Tolpits Lake nr Watford TQ087944
- Tonwell nr Ware TL335172
- Trenchern Hills nr Standon TL352217
- Trims Green TL472173
- Tring Park SP928105
- Tring Reservoirs (exact reservoir not specified) SP920135
- Tring Reservoirs - Marsworth Res SP922137
- Tring Reservoirs - Startop's End Res SP919138
- Tring Reservoirs - Tringford Res SP918132
- Tring Reservoirs - Wilstone Res SP905130
- Tring SP925115
- Tring Sewage Treatment Works SP924134
- Tring Station SP950122
- Troy Mill Lake nr Maple Cross TQ039905
- Turnford Lakes (Cheshunt GPs) TL370044
- Turnford nr Cheshunt TL364042
- Twyford Bury Farm nr Bishop's Stortford TL494194
- Tykeswater Lake nr Elstree TQ173963
- Tyttenhanger GPs (exact GP not specified) TL190050
- Tyttenhanger GPs - Coppice Wood TL184048
- Tyttenhanger GPs - Coursers Farm TL205047
- Tyttenhanger GPs - Coursers Road GPs TL197040
- Tyttenhanger GPs - Tyttenhanger Farm TL198050
- Tyttenhanger GPs - Willows Farm Lake TL188044
- Tyttenhanger GPs - Willows Farm TL189041
- Tyttenhanger GPs - fishing lake TL190050
- Tyttenhanger GPs - main GP TL195052
- Tyttenhanger Green nr St Albans TL180059
- Tyttenhanger area - Garden Wood TL195047
- Upwick Green nr Bishop's Stortford TL455243
- Vanstones Park nr Codicote TL215199
- Verulamium Park TL137070
- Wadesmill nr Ware TL360175
- Wain Wood nr Preston TL180255
- Wakeley nr Buntingford TL342268
- Walk Wood nr Whitwell TL188221
- Walkern Hall TL299250
- Walkern Park Farm TL315248
- Walkern TL290265
- Wall Hall nr Aldenham TQ137995
- Wallington TL293338
- Waltham Cross TL363000
- Ware Park TL334145
- Ware TL360145
- Wareside TL394156
- Warren Spring Laboratory nr Stevenage TL238225
- Warren's Green nr Stevenage TL266286
- Warrengate Farm nr Welwyn Garden City TL272134
- Water End nr Brookmans Park TL230040
- Water End nr Great Gaddesden TL040105
- Water Hall nr Bayford TL296099
- Waterend nr Wheathampstead TL202140
- Waterford GP - Molewood GP TL318147
- Waterford Heath GP TL318147
- Waterford Landfill site TL305147
- Waterford Marsh TL315146
- Waterford TL313148
- Wateringplace Green nr Buntingford TL331267
- Watersplace Farm nr Ware TL384145
- Watford - The Lairage Land LNR TQ104951
- Watford Link Road TQ117973
- Watford TQ110970
- Watton at Stone TL300193
- Welham Green TL235055
- Well End nr Borehamwood TQ205981
- Wellpond Green nr Standon TL418221
- Welwyn Garden City - Burycroft TL242143
- Welwyn Garden City - Panshanger TL260130
- Welwyn Garden City - The Commons LNR TL255105
- Welwyn Garden City TL250130
- Welwyn TL230165
- West End nr Essendon TL263085
- West Hyde TQ038916
- West Wood nr Great Offley TL161250
- Westbury Wood nr Great Offley TL140257
- Westland Green nr Standon TL421221
- Westmill Quarry nr Ware TL341155
- Westmill nr Buntingford TL368271
- Westmill nr Ware TL340160
- Weston Park TL262295
- Weston TL260303
- Westwood Quarry nr Watford TQ074989
- Wheathampstead TL175140
- Whempstead TL320209
- Whippendell Wood nr Watford TQ075977
- White Hall Farm nr Stevenage TL287216
- Whiteway Bottom nr Whitwell TL155208
- Whitwell Hoo TL192198
- Whitwell Sewage Works TL192209
- Whitwell TL180210
- Wickham Hall nr Bishop's Stortford TL475230
- Widford TL420160
- Wigginton SP938102
- Wilbury Hill nr Letchworth TL201326
- Wildhill nr Hatfield TL263068
- Willian nr Letchworth TL225306
- Willowmead nr Hertford TL316122
- Wilstone Village SP905139
- Winch Hill Farm nr Luton TL137218
- Withstocks Wood nr Luton TL136201
- Wood End nr Buntingford TL324254
- Wood Hall Farm/Estate nr Borehamwood TQ184994
- Wood Lane nr Pirton TL140310
- Woodhall Farm nr Welwyn Garden City TL235103
- Woodhall Park & Lake TL313185
- Woodhill House nr Hatfield TL266059
- Woodoaks Farm nr Maple Cross TQ032932
- Woodside nr Hatfield TL255068
- Woodside nr Watford TL105010
- Woolmer Green TL255185
- Wormley TL365055
- Wormley West End TL334059
- Wormley Wood TL320060
- Wormleybury TL355058
- Wrotham Park nr Potters Bar TQ245990
- Wyddial TL375315
- Wymondley Substation TL204269