I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
An open playing field, good for practising manoeuvres, with some photographic opportunities across the city. There's a dedicated car park in the north east corner.
The park is a designated drone flying area according to the council's bye-laws.
Here's a map of the designated area:
https://www.bristol.gov.uk/files/documents/2902-model-aircraft-dundridge-park/file
Here's a link to the council's information (click on "Model aircraft and drones"):
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 22/02/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.