I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Another in my series of Sussex windmills, this time in Polgate village.
Easy to fly and lots of parking on local roads.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 06/01/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.
Minor point but it’s spelled Polegate, with an ‘e’. Only mention it becuase my gran used to live very close by and I didn’t realise there was a windmill there, so thought you were referring to a different ‘Polgate’. I’ll have to check it out next time I’m down there.
You’re very close to the Long Man of Wilmington in that neck of the woods - but you probably know that 
Edited.
London Si72 thanks for the spelling and yes I have actually walked on the long man a few years ago
Cheers
David
