I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Chateau Impney is a Grade II listed 19th-century house built in the style of an elaborate French château near Droitwich Spa in Worcestershire.
It's mainly used by businesses these days and is difficult to access the actual site to even get decent ground photography. 
I parked on Dodderhill Road, a short walk south west from where the TOAL marker is on the map, on the part that's south of the A38.
The TOAL marker is on a small bridge going over the river where there is a break in the trees allowing better VLOS.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 26/12/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.