It's in Hayes (the Hayes in Bromley, not the Hayes in Hillingdon).
It's a short walk uphill from the station, behind the shops. (this may already be all you need to know)
It's a 4 acre strip of parkland squished between two residential streets and accessed at each end. It used to be part of the grounds of Hayes Place, the country mansion where William Pitt The Elder lived and died. Upon the death of the last owner, Sir Everard Hambro, the land was sold for housing and in 1933 the big house was demolished. The Hayes Garden Estate was the result. It's mostly stockbroker boltholes but with green gaps at Husseywell Park and The Knoll.
It feels like a woody valley but that's all a landscaped illusion, most notably the chain of five ponds running from one end to the other. The main path meanders centrally but you can cross to the far side of the water via some minor functional footbridges. Several of the big trees in the Knoll date back to Pitt's time, the largest being a whopping hollowed-out stand-inside-able oak that's had to be protected by fencing for its own good. It's still magnificent though.
The gates on Pickhurst Lane are proper municipal ironwork and are locked half an hour after dusk. Take care to avoid the sump near the north entrance. Daffodils, crocuses, snowdrops and hyacinths brighten any walk from top to bottom, or do at present. One tree commemorates councillor Percy Jones who helped save this patch of green. I have rarely seen more acrobatic squirrels. One of the adjacent streets is also called The Knoll. Buses 119 and 353 stop close by.
I have run out of things to tell you, so that must be everything you need to know.
