After leaving "Doctor Who", Sherwin maintained connections with the series. When Michael Grade attempted to cancel it in 1985, Sherwin offered to “take it off hands” and “produce it independently”, and also claimed to have done this a second time with Peter Cregeen, the man responsible for "Doctor Who"’s actual cancellation in 1989. He later contributed to several documentaries for the "Doctor Who" DVD range, as well as providing commentaries for the two stories he produced and surviving episodes of "The Web of Fear" and "The Wheel in Space" for the "Lost in Time" collection.