Theresa May has said she hopes her cabinet will be able to “discuss and decide on a substantive way forward” on Brexit at their crucial Friday awayday.
The UK prime minister told Germany’s Angela Merkel she hoped this would lead to an increase in the “pace and intensity” of UK-EU negotiations.
As they met in Berlin, Ms Merkel said Brexit talks were at a “crucial phase”.
She said that a political framework for future relations needed to be clear by October.
Their meeting came as Downing Street set out some of the detail of its new proposal for how trade between the UK and the EU could be handled after Brexit.
There are currently differing views within the cabinet about how closely the UK should stick to EU rules after Brexit, and what compromises should be made to achieve “as frictionless as possible” trade.
After months of tension and disagreement, the prime minster is gathering the entire cabinet at her country retreat, Chequers, on Friday with the aim of agreeing a UK proposal on how future relations should work.
That would then be the subject of negotiations with the EU – which might have different ideas.
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The UK is due to leave the European Union at 23:00 GMT on 29 March 2019. But to allow time for parliaments in the UK and the EU to approve whatever deal is agreed, the aim is for the framework for future relations to be agreed this autumn.
According to No 10, the new plan would allow the UK the freedom to set its own tariffs on goods arriving into the country.
Technology would be used to determine where the goods will ultimately end up – and therefore whether UK or EU tariffs should be paid.
Downing Street says it is confident the arrangement would be partly in place by the end of the proposed transition period in December 2020 – with the system being fully operational by the next general election.
On regulations, it is understood that the UK would closely mirror the EU’s rules – but Parliament would be able to decide where to deviate.
However, the arrangement has not been explained in full – and it is not clear whether the cabinet will back the plan, or whether the EU would agree.
A source close to Brexit Secretary David Davis refused to comment on a Daily Telegraph report that he had already told Mrs May the plan was unworkable.
Mr Davis and Mrs May were “working closely on what will be presented on Friday”, the source said.
Among the issues that need to be resolved is the need to avoid new border checks between Northern Ireland and the Republic of Ireland when the UK is outside the customs union.
Eurosceptic MPs have warned Mrs May against tying the UK to the EU after it leaves, saying this will prevent it from striking its own trade deals with other countries.
After Friday’s meeting, the government is expected to publish a White Paper setting out its plans in detail.
The EU’s questions, by Adam Fleming
The European Union asked a series of questions about the UK’s previous customs proposals and they are still relevant.
Will it be temporary? Does it solve the Irish border issue fully or partly? Does it respect the integrity of EU customs policy? How is it supervised? How will the UK system evolve as the EU’s does? Will the EU need to change its trade policy?
But customs is only a fraction of the relationship between the UK and the EU and so the British idea of aligning to some European regulations is a much bigger deal.
And the priority in Brussels is to find a solution to the Northern Irish border. “If there isn’t a deal on that then things could turn nasty quite quickly,” a diplomat told me.
The EU is waiting to see the full White Paper. Officials from the 27 remaining countries are primed to meet soon after it is published and ministers will give their reaction at a meeting on 20 July but civil servants in Brussels expect to be combing through it until the end of the month at least.
Speaking on the BBC’s Daily Politics on Wednesday, leading Conservative Eurosceptic Jacob Rees-Mogg hit out at suggestions the new arrangement could, in a bid to ensure smooth trading, involve a single market on goods with the EU and close alignment with its regulations.
Mr Rees-Mogg, who leads the pro-Brexit European Research Group of Tory MPs, said this would be a “really foolish policy” and “would not be a sensible way to run our economy after we’ve left the EU”, adding: “I won’t be reassured until I know the details of what comes out of Friday one way or the other.”
In an attempt to address concerns, Mrs May said at Prime Minister’s Questions the government would ensure “we are out of the customs union, that we are out of the single market, that we are out of the jurisdiction of the European Court of Justice, we are out of the Common Agricultural Policy, we are out of the Common Fisheries Policy, we bring an end to free movement, we take control of our borders, we have an independent trade policy”.
Will Merkel be sympathetic?
By BBC Berlin correspondent Jenny Hill
Mrs May is on a mission to reassure her European allies. But talks earlier this week with the Dutch prime minister did little to allay concern over the slow pace of Brexit negotiations.
And few in Berlin expect much more from today’s meeting with Angela Merkel. German business and industry leaders are particularly worried about the impact of an important trading partner leaving the EU with no deal in place.
It’s thought Mrs May might run an as-yet unpublished proposal for a post-Brexit customs arrangement past Mrs Merkel before it’s discussed at a meeting of British ministers on Friday.
She might not find the German chancellor on sympathetic form. Mrs Merkel – herself preoccupied with a domestic row over migration – has repeatedly warned Britain it can’t cherry pick the terms of its exit.
Brexit: Theresa May meets Merkel ahead of cabinet summit}