Liam Charles and Tom Allen set two chocolate-themed challenges for the four remaining teams in the third episode - and one of the tasks they will face has never been seen before in the show. For the climactic showpiece round, the teams are required to make a firework-themed creation, which must incorporate moving parts as well as featuring chocolate entremets. Judges Benoit Blin and Cherish Finde will assess their efforts before deciding which three teams will be continuing to next week's round