Tracteurs en duel

In the English heat, the all-female Diva Drivers from Leicestershire are determined to outmanoeuvre Somerset's Checkshirt Choppers and win a place in the semi-final; the teams go head-to-head in three challenges.

Northern Ireland's Bogmen and Determinators rev up against each other; they have to tackle racing, reversing and mowing challenges to grab a place in the semi-final.

In the Welsh heat, two teams of farmers from south-west Wales put their reputations as skilled drivers on the line; it's the West Wales Cowboys versus the Chipmunks and both teams are determined to fly the flag for their nation.

It's a wild ride with the Highlands against the Lowlands in the Scottish heat; two teams with agriculture in the blood, but only one can make it to the semi-finals.

The best tractor-driving teams from England and Wales rev up for the semi-final; battling against the clock, they'll have to mow quiz clues into fields of grass, face a reversing course and take tips from Sonic.

Les meilleurs conducteurs de tracteurs se déchaînent dans cette demi-finale.