British Secretary of State for Exiting the European Union David Davis | Dan Kitwood/Getty Images David Davis: A ‘hostile’ no-deal Brexit could mean UK not paying Brexit bill The UK Brexit secretary said he thought the prospect of no agreement at all was ‘off the probability scale.’

A hostile no-deal Brexit in which the U.K. leaves the EU without any agreement at all is “off the probability scale,” Brexit Secretary David Davis told MPs, but if such a scenario did occur he could "imagine" the U.K. not honoring any financial commitment to the bloc.

Speaking in front of the House of Commons exiting the European Union committee, Davis said there were “various sorts of no deal” and claimed many of the scenarios about the prospect of a no-deal Brexit were “phrased in polemical not logical arguments.”

“There’s a no deal where we go to WTO arrangements but we have a barebones deal on other elements…aviation, data, nuclear maybe and so on,” he said.

“And then there is a complete failure to agree, hostile. Now I think that is so incredible it is actually off the probability scale. In those circumstances, it is conceivable there would be no deal of any sort.”

Questioned by the Euroskeptic Conservative MP Jacob Rees-Mogg, Davis said that in the event of such a “hostile” no deal, he could “imagine” the U.K. not meeting the financial obligations to the EU that Prime Minister Theresa May has already agreed in principle.

In her speech in Florence, May said: “I do not want our partners to fear that they will need to pay more or receive less over the remainder of the current budget plan as a result of our decision to leave. The U.K. will honor commitments we have made during the period of our membership.”

That amounts to a sum of around €20 billion from the U.K. to keep the EU’s multiannual financial framework whole up until 2020.

However, Davis did not confirm whether the kind of “barebones deal” he set out would still include such a payment.

Rees-Mogg said he was concerned that in such a scenario the U.K. might pay a Brexit divorce bill with no guarantee of a future trade agreement.

“The worry is… that we get to 29 March 2019, we stay under auspices of the European Court [of Justice], we’re still in the customs union, we accept new rules as they come through, we keep on paying money with the promise of a trade deal on the never never,” Rees-Mogg said. “We are still therefore in the European Union for a further two years and all that has happened is the endpoint has been delayed and the uncertainty in 2021 … is just as great.”