I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Bosworth Battlefield Heritage Centre and Country Park is set in the heart of England, a picturesque place with wide open fields for flying, served by the Battlefield Railway line which runs steam train trips most weekends. more picturesque photography
I visited early one weekday morning, very quite and no interruptions from the public whilst flying, I did however keep my distance from the heritage Centre buildings.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 21/09/2021. It remains the responsibility of any pilot to check for any changes before flying at the same location.