SIR KEIR STARMER could face a parliamentary sleaze inquiry into claims he lied to MPs over the Peter Mandelson scandal.

The Commons will vote tomorrow whether to refer the Prime Minister to the privileges committee to consider if he misled the house over the way Lord Mandelson’s appointment as ambassador to the US was handled.

Commons Speaker Sir Lindsay Hoyle allowed a vote on the issue following requests from Tory leader Kemi Badenoch and other senior MPs.

Cabinet minister Emma Reynolds accused the Tories of playing “silly political games” over the issue.

The government took the unusual step today of publishing a letter from former Cabinet secretary Sir Chris Wormald to the Prime Minister.

It revealed that the head of the Civil Service had concluded the “appropriate processes were followed” in both the appointment and sacking of the peer.

In the message dated September 16, Sir Chris, who conducted a review into Lord Mandelson’s appointment, said he would “keep this under review if any further evidence emerges.”

Sir Keir was expected to face backbenchers at a meeting of the Parliamentary Labour Party (PLP) last night ahead of the crunch vote.