Six more robots compete in the second heat, with last year's champion Carbide returning to face brand new challengers Eruption, Aftershock, Crackers N Smash, Gabriel 2 and Big Nipper. Dara Ó Briain and Angela Scanlon present the show, with commentary from Jonathan Pearce.

• Dara Ó Briain
• Angela Scanlon
• Jonathan Pearce