I have just added this to the map of places to fly your drone at Drone Scene:
Lewes Leisure centre has a fine athletics track and multiple football pitches as well as a traditional indoor Leisure Centre. I guess it can be busy at weekends but lots of room to fly.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 14/09/2025. It remains the responsibility of any pilot to check for any changes before flying at the same location. Landowner permission may be required before taking off.