The Royal Parks
Group
Manages 8 major Royal Parks covering 5,000 acres: Bushy Park (with the Longford River), The Green Park, Greenwich Park, Hyde Park, Kensington Gardens, The Regent's Park (and Primrose Hill), Richmond Park and St James's Park. That’s the official list - note the “the’s” on Green and Regent’s. Would make a good trivia question.
See other memorials in this area