Seeking a Thamesmead Orchard

https://youtu.be/EFtOBtIQdoA An orchard for the enjoyment of local people was reportedly planted around twenty years ago on the edge of Crossness Park. However, after two walks in the area, all I could locate was an apple tree beside the Ridgeway Path. Does anyone know the Orchard? My tree was in abundant fruit with a carpet of apples already on the ground for insects and birds. It tasted a bit like a Granny Smith; tart and acidic with a subtle sweet flavour and crisp, firm white flesh. Perhaps it's a wilding grown up from a seed from a thrown away core, but not the kind of focused planting I was looking for.