Petrol prices: Average cost of filling family car set to exceed £100
At least 13 protesters have been arrested for driving too slowly during road blocks demonstrating against high fuel prices.
Police said there had been a legal minimum speed limit in place, but a number of drivers had been caught breaching this.
Twelve were arrested in south Wales, while one driver was arrested in Devon after previously being warned about driving too slowly.
Convoys of protesters drove slowly on purpose on fast-moving roads in a call for fuel duty to be slashed on Monday.
The demonstrations affected stretches of the M4 and M5, as well as main roads in Essex, Devon, York and Shropshire.
A bridge between England and Wales was temporarily closed due to disruption caused by the protest, while other drivers faced delays due to the convoys.
It came a day after the cost of petrol hit a new record, with the average litre price spiking at 191.5p on Sunday.
