Jon Rollason as Harold Chorley in The Web of Fear
Jon Rollason (born 9 April 1931) played Harold Chorley in the Doctor Who story The Web of Fear. Prior to this he had appeared as Dr. Martin King in several episodes of the Sydney Newman-created series The Avengers, serving as an interim partner for John Steed between Ian Hendry's Dr. David Keel and Honor Blackman's Cathy Gale.