Where was the hospital in the film reach for the sky when the three guys went out from for a drive and ended up at the tea rooms?

In the film "Reach for the Sky," the three main characters, including the pilot Douglas Bader, leave from a hospital located in London. After their outing, they drive to the tea rooms in the picturesque countryside, symbolizing a moment of respite and camaraderie amid their challenges. The hospital setting serves as a backdrop for the characters' recovery and determination.