The BBC science-fiction series "Doctor Who" has often been heavily influenced by the various Quatermass serials, and despite Kneale's dislike of it ("It sounded a terrible idea and I still think it was," he commented in 1986) and his refusal to write for it, unofficial references to Quatermass have appeared in the programme and its spinoffs. Serials directly influenced include "The Web of Fear", "The Invasion", "Spearhead from Space", "The Ambassadors of Death", "Inferno", "The Daemons", "The Seeds of Doom" and "Image of the Fendahl", as well as the 2007 "The Lazarus Experiment", which echoes the first serial's climax in Westminster Abbey, with the use of Southwark Cathedral. Former "Doctor Who" script editor and producer Derrick Sherwin admitted on a DVD documentary that the idea of setting more serials on contemporary Earth in the early 1970s was to recall a Quatermass feel.