Dara Ó Briain 12Foot6. In 2013, Ó Briain joined Jack Dee, Chelsee Healey, Greg James, Melanie C and Philips Idowu in "Through Hell and High Water", a Comic Relief challenge which involved British celebrities canoeing the most difficult rapids of the Zambezi River. They raised over £1 million for the charity. "Dara and Ed's Great Big Adventure", a 2015 three-part fly-on-the-wall television series, followed Ó Briain and Ed Byrne on their journey by car down the Pan-American Highway. In June 2015, "Dara Ó Briain Meets Stephen Hawking", in which Ó Briain travels to Cambridge for a series of interviews with theoretical physicist Stephen
The Magician's Apprentice (Doctor Who) in the Series 4 episode "The Stolen Earth", with Julian Bleach also having appeared as Davros in that episode and its conclusion, "Journey's End". Clare Higgins played Ohila of the Sisterhood of Karn in the mini-episode "The Night of the Doctor", which was part of the 50th Anniversary specials in 2013, and again in the season finale "Hell Bent". Jami Reid-Quarrell made a subsequent appearance as "The Veil" in "Heaven Sent", the penultimate episode of Series 9. The trailer for the episode was released on 5 September 2015. A cinema screening of "The Magician's Apprentice" was held on 27 August