ANGELA Rayner was beaming even as things got messy for her party — as she took on a mud run over the weekend.

Labour’s former Deputy PM was seen tackling an obstacle course at a site run by chain Tough Mudder.

People in muddy water climbing a ramp during a tough mudder event.Angela Rayner took on a mud run over the weekend Credit: x.com Two women, one in a red and black shirt and one in a black "Finisher 2022" shirt, approach each other with arms outstretched on a muddy, grassy course.Beaming Rayner was seen tackling an obstacle course at a site run by chain Tough Mudder Credit: x.com

After the challenge, she wrote: “I’ve been honouring a longstanding commitment to a group of school mums to join them to raise funds for SEND-friendly playground facilities.”

Ms Rayner quit as Sir Keir Starmer’s deputy after a — but is now considered a potential frontrunner to replace the PM.

Yesterday she and backed Andy Burnham’s return to Westminster after Labour’s election bloodbath.

She launched a devastating broadside against the direction of the Government, admitting “what we are doing isn’t working” and declaring: “This may be our last chance.”

Angela Rayner and five other women, covered in mud and wearing orange headbands, pose with medals in front of a banner that reads "FINISHER TOUGH MUDDER."Rayner, second from left, said she was ‘honouring a longstanding commitment to a group of school mums’ Credit: x.com Angela Rayner, former UK Deputy Prime Minister, smiles during the National Growth Debate in London.She is now considered a potential frontrunner to replace the PM Credit: Getty

But despite fevered speculation she was preparing to , Ms Rayner stopped short of launching a leadership bid.

Instead, she made clear blocking the Greater Mayor from running in the Gorton and Denton by-election was a “mistake”.

Mr Burnham is widely viewed as the preferred candidate of Labour’s soft-Left, with many MPs believing he would be a far stronger unifying figure than Ms Rayner in any .

However, he is currently unable to run because he is not an MP.

But Sir Keir will also be watching his back with the threat from Health Secretary , who has reportedly told the PM he is “preparing a case” in the event of a leadership contest.

Mr Streeting is not believed to be directly challenging Starmer, but is set to step in should things “fall apart”, according to The Telegraph .