Four teams tackle the three rounds hoping to win a place in the series semi-final.

Four teams and their flying machines enter the Airena to go head to head.

Dronebusters, Skyfliers, The Stratus and The Drone Dominators display their aerial skills in the third heat of the hi-tech drone-based challenge. Will Best asks the teams to pilot their customised drones through precision flying tasks and high-impact airborne battles, with Rachel Stringer interviewing competitors in the workshop between rounds