The programme's pilot episode was recorded on 16 April 2007 and was the entitled "The Professor of Curiosity." The guests for this episode were Alastair Fothergill, Victoria Finlay and Simon Munnery. This pilot, recorded at the Rutherford Room at the institute of Physics, has not been broadcast. The first series was recorded at the Pleasance Theatre in Islington and, since then, the show has been recorded at the BBC Radio Theatre, with occasional recordings at other venues, such as the Shaw Theatre and RADA Studios (formerly The Drill Hall), all in London. The series was created by Lloyd, Richard Turner and Dan Schreiber. Turner and Schreiber also produce the show. The show's researchers are James Harkin, Xander Cansell (for series one), Molly Oldfield (from series two onward) and Stevyn Colgan (Series 5 onward).