Skip to main content
Open this photo in gallery:

British Prime Minister Theresa May speaks at a news conference to mark the end of the Commonwealth Heads of Government Meeting at Marlborough House in London on April 20, 2018.HANNAH MCKAY/Reuters

Theresa May is battling to avert a rebellion inside her own party amid fears of euroskeptic Tories that she will break her promise to take the U.K. out of the European Union’s trade regime.

A senior government official said May’s inner circle thinks she could be forced to accept staying in the EU’s customs union because Parliament will reject her plan to withdraw from it when the issue comes to a vote in the House of Commons. Such a move could trigger a challenge to May’s leadership from Brexit campaigners in her Conservative party.

May’s team insists she is committed to breaking away from European customs laws, with officials saying on Sunday that the key policy hasn’t changed.

“The route we’re going for is leaving the customs union but ensuring that we don’t put in place unnecessary barriers to our trade with the European Union,” Justice Secretary David Gauke said on the BBC’s “Andrew Marr Show” on Sunday. “We can make that case to Parliament, we can win that case.”

The question of customs union membership goes to the heart of the kind of Brexit the U.K. will get and is likely to come to a head in a Commons vote as early as next month. The issue will be aired in a non-binding parliamentary debate later this week.

Australia, the United States

May has said she wants to leave the trade regime, which sets tariffs for all EU member states, so that the U.K. can strike better trade agreements with countries such as the U.S. and Australia. Such deals can’t be reached while the U.K. is covered by EU bilateral accords.

But business leaders argue that leaving the customs union will severely damage cross-border trade, potentially imposing new tariffs and requiring burdensome checks on the origin of goods in transit. European officials also see staying in the customs arrangement as a potential solution to the otherwise intractable issue of how to avoid a hard border between the U.K. and Ireland after Brexit.

Senior Brexit-supporting ministers are likely to make their case for breaking free of the EU rules directly to the prime minister when she holds a key meeting of her inner cabinet on Wednesday, one official said.

Cabinet topic

The main topic will be discussion of the U.K.’s aims for international trade after Brexit, according to the official, and will almost certainly involve consideration of the customs deal the country will seek to reach with the bloc.

Last week Foreign Secretary Boris Johnson warned that failing to leave the union would be worse than no Brexit at all. His euroskeptic cabinet colleague, Liam Fox, the international trade secretary, is also a passionate advocate for leaving EU common tariffs and commercial policies.

“Trying to keep us in a customs union would be deeply divisive in the party, the Commons and the country at large,” Jacob Rees-Mogg, chairman of the European Research Group of Euroskeptic Conservatives, told The Sunday Telegraph.

The Sunday Times reported that May’s office believed Fox and Johnson would quit but other euroskeptics would accept staying in the EU customs arrangement. The newspaper quoted one aide saying May would not be upset if Parliament forced her to stay in the customs framework by voting against her plans to leave it, though one person familiar with the prime minister’s thinking disputed the account.

Another senior British official said May’s cabinet hasn’t yet discussed what kind of customs plan it wants but needed to reach a decision before a key EU summit in June. Time is running out for negotiations to reach a deal on the terms of Brexit and a framework for the future trade agreement by October.

Interact with The Globe