Caldecote [Cambs]: TL348570
Caldecote [Hunts]: TL145883
Caldecote Manor Farm: TL225584
Cam Washes (Upware): TL536700
Cam Washes (Waterbeach): TL531696
Cambourne: TL320590
Cambridge Botanic garden: TL455573
Cambridge Research Park: TL483680
Cambridge STW: TL473618
Cantelupe Farm Reservoir: TL418540
Car Dyke (Waterbeach): TL495645
Car Dyke (Werrington): TF170052
Carlton: TL645535
Castle Camps: TL633432
Castor: TL125985
Castor Hanglands: TF120015
Castor Mill: TL128968
Catworth: TL088730
Catworth Hill: TL084737
Cawdle Fen: TL535785
Caxton: TL302584
CEGB Reservoir: TL188953
Central Park Peterborough: TL196999
Chain Corner: TL417783
Chatteris: TL390860
Chatteris Fen: TL3880
Chear Fen: TL5071
Cherry Hinton Cement Pits: TL478575
Cherry Hinton East Pit: TL485555
Cherry Hinton Hall: TL482565
Cherry Hinton West Pit: TL482557
Chesterton [Cambs]: TL465605
Chesterton [Hunts]: TL127955
Chesterton Fen: TL482612
Cheveley: TL685605
Childerley Hall: TL355615
Chilford Hall: TL567489
Chippenham Fen: TL645695
Chittering: TL500700
Chrishall Grange: TL444428
Christchurch: TL493965
Clay Farm - See Trumpington (Clay Farm)
Clayhithe: TL502644
Clayway Farm: TL570830
Coates: TL307978
Cobb's Wood: TL347515
Cock Inn Farm (Isleham) - See Isleham (Cock Inn Farm)
Coe Fen: TL448578
Coldham: TF434028
Coldham's Common: TL475585
College Farm (Duxford) - See Duxford (College Farm)
Colne Fen GP: TL385775
Comberton: TL380560
Comberton (Westfield Farm): TL380549
Conington [Cambs]: TL320663
Conington [Hunts]: TL175860
Conington Airfield: TL185870
Conington Fen: TL205860
Conington Wood: TL205860
Copley Hill: TL510531
Coploe Hill: TL491423
Coppingford Wood: TL175803
Coton: TL406586
Coton Countryside Reserve: TL413577
Cottenham: TL448674
Cottenham (Long Drove): TL470683
Coveney: TL490820
Coveney reserve: TL48R
Cow Lane GP - See Godmanchester GP
Cow Pasture Gorse: TL136833
Crafts Hill: TL390629
Crane Hill: TL197553
Crown Lakes CP: TL195943
Croxton Park: TL250595
Croydon: TL312494
Cygnet Park Peterborough: TL183953