Beavis

Dr. Beavis was a medical specialist called in from London by Ashbridge Cottage Hospital to take a look at the Third Doctor. He enlisted Corporal Forbes to guard his car and seemed very doubtful of Henderson's claims that the Doctor had an alien physiology. Before he could begin the examination, the Doctor stole Beavis' clothing and car to escape from the hospital. They were eventually returned. (DW: Spearhead from Space)