Duffield said the hypocrisy of a leader enjoying expensive free clothing and outings while asking others to tighten their belts was “staggering”.

She also attacked the Prime Minister’s decision to maintain a cap on a benefit aimed at supporting families with children.

“Someone with far-above-average wealth choosing to keep the Conservatives’ two-child limit to benefit payments which entrenches children in poverty, while inexplicably accepting expensive personal gifts of designer suits and glasses costing more than most of those people can grasp – this is entirely undeserving of holding the title of Labour Prime Minister,” she wrote.

Duffield said that she would in the future sit as an independent MP “guided by my core Labour values”.

The row over the free gifts from rich donors has already cast a shadow over the party’s first conference since they returned to Government.

Labour ousted the Conservatives in a landslide election win in July after 14 years in opposition.

But instead of toasting their victory at the conference earlier this week, ministers found themselves on the back foot and facing anger from the normally supportive unions.

Financial ‘black hole’

All of the gifts accepted by Starmer had been declared and none fall foul of parliamentary rules.

But records show that Starmer accepted more than £100,000 ($210,000) in gifts and hospitality since December 2019, more than any other lawmaker.

It also emerged that Deputy Prime Minister Angela Rayner accepted the loan of a New York apartment for a holiday and that Chancellor Rachel Reeves accepted around £7500 worth of clothing.

Reeves and the Labour Party have defended the abolition of the £300 payment to many pensioners to help them heat their homes, citing a need to fill a “£22 billion black hole” they say was left by the Conservatives.

Starmer lost a symbolic vote at the conference demanding that he reverse the contentious policy.

The vote was non-binding but its outcome was nonetheless embarrassing for the Premier.

It highlighted the strength of feeling among activists and union backers.

Delegates narrowly backed a union motion calling for the cut to be reversed.

“I do not understand how our new Labour Government can cut the winter fuel allowance for pensioners and leave the super rich untouched,” said the Unite union general secretary Sharon Graham.