Grosvenor Square Reopens After £25 Million Transformation Into a Wildlife Haven

Central London's second-largest green space returns to the public on July 20 following a £25 million redesign that transforms Grosvenor Square into a biodiversity-focused park. The 300-year-old Mayfair landmark, closed since June 2025, has undergone its most significant private investment in West End public green space in a generation, introducing 150,000 plants, 80,000 bulbs, and 44 new trees while restoring landscape features not seen in three centuries.

From Manicured Lawns to Wildlife Corridors

The redesign fundamentally shifts Grosvenor Square away from its formal, lawn-dominated past. Wildlife-friendly planting has expanded from less than 1 percent of the square to approximately 50 percent of its total area. Designers have introduced woodland walks circling the perimeter, two new wetland habitats, and expanded wildflower and native species plantings that reflect ecological conditions before the widespread adoption of pesticides and monoculture landscaping.

The project was conceived by London architecture practice Tonkin Liu and delivered by design firm BDP, with planting strategy led by Professor Nigel Dunnett, a leading expert in urban horticulture at the University of Sheffield. This ecological approach creates homes for birds, pollinators, and other wildlife in the heart of central London's commercial district.

Climate Resilience and Public Amenities

Beyond biodiversity, the redesign incorporates climate adaptation measures. The new landscape can absorb up to 1.4 million litres of stormwater, reducing pressure on local drainage infrastructure during heavy rainfall events. The park has also reinstated oval-shaped gardens dating back to the 1720s and preserved existing memorials honouring US President Franklin D. Roosevelt, the Eagle Squadrons, and 9/11 victims within the new layout.

Visitors will encounter 300 new seating areas, improved entrances, public toilets, water fountains, enhanced lighting, and expanded CCTV coverage to improve navigation, welcoming atmosphere, and evening safety. A new café kiosk will serve refreshments throughout operating hours, while an education centre funded by The Westminster Foundation and delivered by the London Wildlife Trust will offer biodiversity and climate change programmes for children and adults.