which seems to give a reasonable estimation of what will be included.
.
It broadly is every nature reserve on the east coast of England between Hull and Whitstable.
co-ordinates:
Site Break: Co-ordinate
Humber Estuary (Western limit) Goole Boothferry Road Bridge : 53.72752043802812, -0.8902877392881897
Humber Estuary (Northern limit) Spurn National Nature Reserve : 53.615281758577936, 0.14074845236655456
Humber Estuary (Southern limit) Saltfleetby-Theddlethorpe Dunes National Nature Reserve : 53.38189057083303, 0.23015761562208104
The Wash (Northern limit) Gibraltar Point National Nature Reserve : 53.103924085916745, 0.3335698509881448
The Wash (Western limit) Moulton Marsh Nature Reserve : 52.887665497918675, -0.004853078218094182
The Wash (Southern limit) Bulldog Sand : 52.82058624701928, 0.36120125104237794
The Wash (Eastern limit) Salthouse Marshes : 52.956339950136694, 1.082460577016149
Breydon Water : 52.60450015492682, 1.6816482342148946
Suffolk Coast (Northern limit) Benacre National Nature Reserve : 52.38468290059429, 1.7012860252554711
Suffolk Coast - Dunwich Forest : 52.285114527021584, 1.6170697463730788
Suffolk Coast - RSPB Minsmere : 52.25059236531385, 1.6191407438438339
Suffolk Coast - Orford Ness National Nature Reserve : 52.0899498363006, 1.5547180914509597
Suffolk Coast - Kyson Hill : 52.0825284572056, 1.3097110711093989
Suffolk Coast - (Southern limit) Stour and Orwell Estuaries : 52.00836331431334, 1.231818696985659
Hamford Water National Nature Reserve : 51.88206622074619, 1.2430540878381948
Blackwater, Croach, Roach and Colne Estuaries (Northern limit) : 51.854362715133846, 0.9550608512823585
Blackwater, Croach, Roach and Colne Estuaries (Western limit) Gravel Pit : 51.731087997069785, 0.699489297521252
Blackwater, Croach, Roach and Colne Estuaries (Eastern limit) Dengie National Nature Reserve : 51.70208296355698, 0.9569119359377984
Blackwater, Croach, Roach and Colne Estuaries (South Eastern limit) Foulness Point : 51.61688220375362, 0.9505440587482575
Blackwater, Croach, Roach and Colne Estuaries (South Western limit) Leigh National Nature Reserve : 51.53649778690814, 0.6332684948193673
Thameside Nature Discovery Park : 51.50097525876993, 0.44345822128700546
South Thames Estuary and Marshes (Western limit) : 51.441943740961335, 0.4119481084936531
South Thames Estuary and Marshes (Eastern limit) : 51.453574390920714, 0.4859495589060458
Thames Estuary and Marshes (Western limit) : 51.46460304488357, 0.4559023410302655
Thames Estuary and Marshes (Eastern limit) Grain Coastal Park : 51.46312661404324, 0.7188509739868435
Medway Estuary : 51.41045180602191, 0.614304341789913
Elmley National Nature Reserve : 51.38087941025253, 0.7853843679957827
Oare Marshes Nature Reserve : 51.348828330025384, 0.8903870731386978
The Swale National Nature Reserve : 51.375877836512984, 0.9276377723994094
Southern limit Saxon Shore Way Seasalter : 51.34537715935603, 0.958934998368508