Species
1 Rainham Marshes RSPB Reserve
207
2 Beddington Sewage Farm
184
3 Walthamstow Wetlands
176
4 London Wetland Centre WWT Reserve
175
5 Wanstead Flats Park
164
6 Walthamstow Wetlands--Lockwood and Maynard Reservoirs
156
7 Brent Reservoir
145
8 Walthamstow Marshes SSSI
131
9 King George V Reservoir
130
10 Richmond Park
127
11 Leyton Flats
121
12 Hyde Park
119
13 Morden Hall Park
118
14 Broadwater Lake HMWT NR
117
15 Crossness Sewage Works and NR
115
16 Alexandra Park
114
17 Regents Park
114
18 WaterWorks NR
110
19 Queen Elizabeth Olympic Park
109
20 Kew Royal Botanical Gardens
105
21 Kensington Gardens
104
22 Rainham landfill (restricted access)
104
23 Epsom Common
102
24 St. James's Park
102
25 Ingrebourne Valley NR and Hornchurch Country Park
101
26 Wanstead Flats
101
27 Bushy Park
99
28 Hampstead Heath
99
29 Leyton Marsh and Waterworks NR
96
30 Fairlop Waters Country Park
89
31 Regents Park--Boating Lake
89
32 Tooting Common
87
33 Woodberry Wetlands NR (Before 2016 Stoke Newington Reservoirs)
86
34 Beckton Creekside & Sewage Works
85
35 Hackney Marsh
84
36 Hyde Park--The Long Water
83
37 Dagenham Chase LNR
82
38 William Girling Reservoir
81
39 Hampton Court Palace
80
40 Battersea Park
79
41 Heathrow Airport
78
42 Osterley Park and House
77
43 Ruislip Lido
77
44 South Norwood Country Park
77
45 Bedfont Lakes LNR
72
46 Greenwich Park
72
47 Harefield Lake (previously Moorhall Gravel Pit)
72
48 Chingford Plains
70
49 Green Park
67
50 Victoria Park
66
51 East India Dock Basin
65
52 ZSL Woodland Walk
65
53 Leg of Mutton NR
64
54 Wimbledon Park
63
55 Hampstead Heath--Kenwood
62
56 Horton Country Park
62
57 Mitcham Common
62
58 Totteridge Valley
62
59 Wimbledon Common
61
60 Bayhurst Wood Country Park
60
61 Tate Modern
60
62 Crayford Marshes
59
63 Middlesex Filter Beds NR
59
64 Wandsworth Park
59
65 Bow Back Rivers
57
66 Cranford Park
57
67 Greenwich Peninsula
57
68 Putney Heath
57
69 ZSL London Zoo
57
70 Chiswick House and Gardens
56
71 Dulwich Park
56
72 Keston Common and Ravenbourne Open Space
56
73 Tower of London
56
74 Victoria Embankment
56
75 Hampstead Heath--Hampstead Ponds
55
76 Lloyd Park
55
77 Ponders End Lake
55
78 Crystal Palace Park
54
79 Wandsworth Common
54
80 Beckenham Place Park
53
81 Grovelands Park
53
82 Peckham Rye Common
53
83 Russia Dock Woodland
53
84 South Norwood Lake
53
85 Dews Farm Sandpits LWT NR
52
86 Erith Riverside
52
87 Finsbury Park
52
88 Gunnersbury Park
51
89 Lincolns Inn Fields
51
90 Bow Creek
50
91 Kempton Park Reservoirs LNR and SSSI
50
92 Victoria Tower Gardens
50
93 Barnes Common
48
94 Kelsey Park
48
95 Middlesex University Campus
48
96 Minet Country Park
48
97 Nunhead Cemetery
48
98 Clapham Common
47
99 Telegraph Hill Park
47
100 Thames Barrier Park
47