Relive the greatest moments from Episode 4s battles... Which Robot will be next to reach the grand finale?

The fifth episode in the robot fighting series presented by Dara O Briain and Angela Scanlon.

This episode features the tallest robot - and also one of the most bizarre - ever seen on Robot Wars: Gabriel, built by Mensa member Craig and his three sons. It has wheels as tall as a washing machine and a huge samurai sword.

Other robots include Thermidor, shaped like a lobster by a team who have never eaten lobster; and Pulsar, built by 19-year-old self-taught engineer Ellis and featuring 9,000-RPM spinning teeth. There are dramatic scenes as one of the robots bursts into flames in the arena.