Protesters invaded the circuit during the start of the British Grand Prix at Silverstone.
Around five people, wearing T-shirts protesting against global oil usage, walked on to the Wellington straight as cars passed at low speeds, before being removed by police.
The race had been red flagged following a large crash on the opening lap.
Racing, which had started at 15:00 BST, resumed under an hour later.
This article was originally published by Bbc.co.uk. Read the original article here.