I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
There is not much information available on Combfield House. As the image shows, there are a few decaying buildings here, plus the nearby river Derwent, plenty of trees, and a line of sight to Derwent reservoir, so plenty to explore from above.
There is limited free roadside parking at W3W: satellite.segments.vineyard.
There is a public footpath opposite the car park that leads straight to Combfield House, making TOAL easy. Take the steps up on the right a few yards along the footpath, then just follow the footpath signs.
Wellies or good boots are recommended, and watch out for the barbed wire at the top of the fence near the steps.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 27/02/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.