SIR Keir Starmer today brushed off leadership posturing by rival Andy Burnham as "part and parcel" of politics.

The PM insisted there's nothing new about party leaders being threatened from within their own ranks.

Pressed on manoeuvres by the Manchester Mayor, Sir Keir told the BBC: "Comments about leaders and leadership are part and parcel of being in politics.

"It is the bread and butter of politics."

The PM added: "Every leader gets it. It's in the job description.

"I don't focus on that.

"I focus on what we've got to get done."

Labour's annual party conference, which starts today, has been overshadowed by a myriad of difficulties for Sir Keir.

The PM arrived in Liverpool plagued by accusations he has failed to control Britain's borders and get a grip on the economy.

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