Boris Johnson has ‘very’ good chance of returning to No 10, former aide says

Tim Montgomerie, now a Johnson critic, says ‘close to 140’ Tory MPs could back disgraced ex-PM – who remains loved by party members

Boris Johnson is enjoying a surge in support among Tory MPs and has a “very” good chance of returning to No 10, a former aide is predicting.

Tim Montgomerie, now a Johnson critic, said suggestions that the disgraced former prime minister will struggle to secure the 100 backers required to join the leadership race are wrong.

Once in the contest, Mr Johnson would then be in a strong position to triumph in a ballot of Tory members – many of whom loathe his likely rival, the former chancellor Rishi Sunak, he said.

Asked how “seriously” people should take the prospect of a Johnson return, Mr Montgomerie replied: “Very. I’ve changed my own opinion over the last 24 hours.

“I’m now hearing from two or three people I really respect – who are usually very good at the numbers – that he is not only likely to pass the 100 MPs’ threshold but could get close to 140.”

At least 37 Tory MPs have declared their support for Mr Johnson, who has not yet announced he will run but is thought to be about to fly back from a Caribbean holiday to do so.

But he still faces a contempt inquiry into whether he lied to parliament over the Partygate scandal – which could trigger his suspension – and many other Conservatives are appalled by the prospect.

David Lidington, the effective deputy prime minister under Theresa May, said Mr Johnson would not deliver the “competence” the country needs, even setting aside the accusations of deceit.

“I think he has had his chance and the Conservative parliamentary party concluded just a few months ago this could not go on and it would not be right for him to continue as prime minister – that, after all, is why he resigned,” he said.

But the Peterborough MP Paul Bristow insisted Mr Johnson could “unite all factions of our party” – despite more than 50 ministers quitting to force him out just three months ago.

“We’re facing a crisis as a party. We could go down and be completely wiped out without Boris Johnson as our prime minister,” he told BBC Breakfast.

“Boris Johnson has a mandate from the members of the party and from the electorate. I’m sure my colleagues will reflect on that when they vote.

“We can avoid a general election, we can go out and put this band back together, we can have political heavyweights around that Cabinet table and we can go on and win the next general election. I’m convinced of that.”

Meanwhile, a former cabinet secretary is warning the new prime minister must be in place by Tuesday to avoid the risk of a market backlash and higher interest rates.

Liz Truss’s successor might not be chosen until next Friday – if party members are allowed to pick the winner – but Gus O’Donnell said that could be too late to ensure economic stability.

A week-long contest could see the new prime minister delay the planned de-facto budget on 31 October until after the Bank of England next sets interest rates on 3 November, he argued.