Olympian Mo Farah accidentally set off viewers' devices as he said "Hey, Siri."
The Great British Bake Of f returned tonight for the fourth instalment of their celebrity specials. Joining the tent was Olympian Mo Farah, Strictly Come Dancing judge Motsi Mabuse, actress Katherine Kelly and actor-comedian Ben Miller.
Hosts and professional bakers Prue Leith and Paul Hollywood tasked the celebs to make meringue roulade and traditional Italian biscuits, before rendering a favourite childhood memory in the shape of a cake for the showstopper.
