London's Green Space: ~47% of the City Is Parks, Woodlands, and Nature Reserves

London is one of the world's greenest major capitals, with approximately 47% of its land area classified as green space—a figure that includes royal parks, commons, ancient woodlands, nature reserves, gardens, and street trees.

Major Green Assets

• Royal Parks (8): Hyde Park, Regent's Park, Richmond Park, Bushy Park, Greenwich Park, St. James's Park, Green Park, Kensington Gardens — 5,000+ acres combined.
• Ancient woodlands: Epping Forest (6,000 acres), Hainault Forest, Highgate Wood, Oxleas Wood.
• Commons & heaths: Hampstead Heath, Wimbledon Common, Clapham Common, Blackheath.
• Nature reserves: 150+ Sites of Importance for Nature Conservation (SINCs), including Wetland Centre (Barnes), Woodberry Wetlands, and Walthamstow Wetlands.
• River corridors: The Thames Path, Lea Valley, and canal towpaths add linear green infrastructure.

Benefits

• Air quality: Trees remove ~2,200 tonnes of pollutants annually.
• Biodiversity: 15,000+ species recorded; 300+ bird species breed or winter.
• Climate resilience: Green cover mitigates urban heat island (up to 5°C cooler in parks).
• Health access: 98% of residents live within 400m of a green space.

Policy Context

The London Plan targets >50% green cover by 2050 through pocket parks, green roofs, street trees, and rewilding—making the city a global benchmark for urban ecology.