I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Plenty of on site parking.
Very large park spread across multiple lakes.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 08/08/2020. It remains the responsibility of any pilot to check for any changes before flying at the same location.
Thanks for adding this to the DroneScene map
Nice location been there a few times . 
I’m a professional drone pilot and was asked to do a drone shoot for Bluebell Wood Hospice in the country park a few years ago. The park refused permission because I only had £5m of public liability and they wanted £10m.
Not sure if it is ok to fly recreationally here.
Thankfully hobbyists don’t have all the grief that comes with a commercial flight.
Not that it matters now anyway with all the changes to the regs a few weeks ago 
There are no airspace restrictions in that area. Provided you take off somewhere sensible you’ll be fine.
Flown here a few times. Lovely place and plenty of space.
