BRITISH voters should ignore Tony Blair and mobilise for a Labour vote in every constituency, Tom Watson said yesterday.

Speaking at retail union Usdaw’s annual delegate meeting yesterday, Jeremy Corbyn’s deputy was grilled over the former Labour PM’s recent comments that anti-Brexit voters should consider voting Tory or Lib Dem.

In a question-and-answer session, a furious delegate asked: “Can you please explain to me why Tony Blair is still in the Labour Party?” She received a wild round of applause for the question.

Mr Watson said he “didn’t know” about Mr Blair’s widely publicised comments, but said: “Don’t listen to him if he did say that.”

He urged delegates to vote Labour regardless of which constituency they lived in, saying this was the only way to defeat Prime Minister Theresa May’s government.

Speaking last month, Mr Blair said voters should support candidates who would “keep an open mind” on whether to support the final Brexit deal.

Asked if this approach could mean supporting the Liberal Democrats, he said: “What I’m advocating may mean that.

“It may mean voting Labour. It may mean, by the way, that they vote Tory, for candidates who are prepared to give this commitment.”

Mr Watson used his speech to praise the record of the previous Labour government and individual MPs.

“We’ve heard a lot of talk about the qualities you need in a prime minister,” he said. “Theresa May doesn’t think that the ability to answer questions is one of them.

“But sometimes the most important question isn’t what makes the best PM. It’s who makes the best MP.”

He also took a swing at Foreign Secretary Boris Johnson, who last week made headlines when he branded Mr Corbyn a “mutton-headed old mugwump.”

The Labour deputy leader cackled: “In the interests of balance, let me just say this: Boris Johnson is a caggyhanded, cheese-headed fopdoodle with a talent for slummocking about, who would do less damage to Britain’s reputation in the world if Theresa May sacked him as Foreign Secretary and replaced him with a souvenir paperweight.

“When we require diplomacy, Boris sows discord. At a time when we need a serious-minded national representative to deal skilfully with some of the most complex problems our country faces, Boris falls back on bluster and bombast.”