Dara O Briain and Angela Scanlon's reboot of this popular series is proving a hit with fans and tonight they're back for another installment of robot action. Tonight, there's a towering, sword-wielding warrior built by a Mensa member and his three sons, that is one of the tallest machines to ever enter the arena and runs on wheels that are the height of a washing machine. Other contestants include a mechanical lobster and a 19-year-old self-taught engineer's creation, which has teeth that spin at 9000RPM. Although the competition takes a rather dramatic turn when one of the robots bursts into flames. Sounds very exciting altogether.