Britain on Friday announced it was easing rules on how many deliveries foreign lorry drivers can make, in an attempt to ease a supply chain crisis before Christmas.

Drivers coming from the European Union can currently only make two pick-ups and drop-offs within seven days of arriving in Britain.

Under the new rules, which the government hopes to implement before Christmas, they will be able to make unlimited trips during a two-week period.

"That's the equivalent of adding thousands of extra lorry drivers to the road..., it'll come in towards the end of the year," transport minister Grant Shapps told Sky News.

Global bottlenecks caused by reopenings from coronavirus lockdowns and foreign workers leaving Britain after Brexit have caused an acute shortage of lorry drivers, leading to supply chain issues across the country.

The government also announced on Thursday that it would issue 800 temporary visas for foreign butchers following warnings that up to 150,000 pigs could be destroyed due to a labour shortage in the meat processing industry.

Like agriculture, which has also complained of shortages, the sector was heavily reliant on workers from the EU, but has been hit by the end to freedom of movement in the bloc.

"A unique range of pressures on the pig sector over recent months such as the impacts of the pandemic and its effect on export markets have led to the temporary package of measures we are announcing today," said Environment Secretary George Eustice.

National Farming Union vice president Tom Bradshaw called the move a "step in the right direction."