BRITISH Airways, Easyjet and Ryanair have begun a legal challenge to the UK Government’s plan to impose two weeks’ quarantine on travellers entering, or returning to, the UK.

BA’s owners, IAG, wrote a letter to Procurator General Sir Jonathan Jones, the head of the Government’s legal service, challenging the quarantine rules which are due to start today. Ryanair and Easyjet are understood to be co-signatories.

In the letter, the airlines argue that the rules for incoming air passengers will be more stringent than those for people who are actually diagnosed as having coronavirus. It makes it clear that the airlines will challenge the rules in court today if needs be, and that could mean fighting the case all the way to the UK Supreme Court.

Ryanair and Easyjet have both received £600 million in emergency funding from the Bank of England, while British Airways received £300m. The bailouts came with very few strings attached, and no environmental conditions.

READ MORE: Travellers arriving in Scotland to be fined £480 if they do not quarantine

A Ryanair spokesperson, commenting on behalf of the three airlines, said: “These measures are disproportionate and unfair on British citizens as well as international visitors arriving in the UK. We urge the Government to remove this ineffective visitor quarantine which will have a devastating effect on UK’s tourism industry and will destroy even more thousands of jobs in this unprecedented crisis.”

Both the UK and Scottish Governments have said they believe the quarantine measures will help stop the spread of the virus, but the proposals have been severely criticised across the travel industry.

Should the airlines win in court in London, the judgment would almost certainly apply in Scotland, though a legal expert told The National they would have to go to the Court of Session unless the Supreme Court makes the judgment in their favour.