Read more: Top Gear’s Paddy McGuinness and Freddie Flintoff stun Welsh fans as they pop into town ahead of filmingBut when it was revealed he had been pranked, the Who Wants To Be A Millionaire presenter took it all in his stride, saying: "Very good, very good. "I should have known there was something going on when you got up early this morning," he added to Lisa.
Dec described it as "one of the most nerve-wracking undercovers ever" while Ant pointed out that Clarkson had rubbed up many people the wrong way over the years so this was payback. .
Undercover saw 'protesters', including Ant and Dec in disguise, arrive at Clarkson's farm, which features on the Amazon series Clarkson's Farm, demanding rights for soil.
Clarkson approached the 'protesters' and he didn't look happy. "Soil rights? There's no such thing," he muttered. One 'protester' then handcuffed himself to Clarkson's car before the 'police' arrived and then a minibus with more 'protesters' including one stripped naked, pulled up.
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