The Prime Minister has "full confidence" in her chancellor, a spokesperson for Downing Street has said, despite Tory calls for him to be sacked.
Philip Hammond has come under fire by prominent Tory Brexiteers including Nigel Lawson after an appearance before the Treasury Select Committee in which he refused to commit spending to a no deal Brexit scenario.
During the hearing he said next month's Budget will not contain allocations "on a potentially abortive basis", adding allocating funds to "hypothetical scenarios" could be costly.
Calls for reshuffle
During an interview on the BBC's Daily Politics show, Lawson said:
[Hammond] may not intend it, but in practice what he is doing is very close to sabotage.
Conservative backbencher Nadine Dorries has also for a "can do" man in the Treasury, while former cabint minister John Redwood tweeted that the chancellor must "get the Treasury to have realistic, optimistic forecasts".
BoJo to go?
The calls came just days after rumours suggested Boris Johnson may also be out of a job, after he overshadowed the Conservative Party conference with his "Brexit red lines".
May was forced to reiterate her confidence in both Boris and Hammond on Monday after she responded to a question about the former by saying she "did not hide from a challenge".
One former minister told City A.M.: "Hammond is safe until the Budget, although of course things are changing fast. It's a tall order, but if things go well in the overall handling of the Budget that might help calm things down."