The West Midlands MP who attended a stag party where the groom dressed as a Nazi is to stay away from the wedding.

MP Aidan Burley sat next to his friend Mark Fournier, who was wearing a fancy dress SS costume, at a stag do at a ski resort in France.

But Mr Burley, the Conservative MP for Cannock Chase in Staffordshire, will be staying away from the wedding this weekend - after admitting that he was wrong not to object to the behaviour of party guests.

Labour MPs have demanded that the Prime Minister sack Mr Burley, an aide to Transport Secretary Justine Greening, after he was seen eating and drinking with 12 friends, some of whom chanted “Hitler, Hitler, Hitler”

The MP was jokingly described as the “candidate for Berlin East” according to reports, and friends were said to raise toasts to the Third Reich and chanted “Mein Fuhrer”.

He did not join in with the Nazi comments but was not seen to object and did not leave the party, it was reported. The group was filmed by a reporter and photographer from a Sunday newspaper who were in the resort researching a different story.

The MP apologised on Saturday evening. He has now apologised again - and admitted he was wrong not to walk out - in a letter to the Jewish Chronicle, the weekly newspaper of Britain’s Jewish community.

He said in the letter: “On reflection, I wish I had left as soon as I had realised what was happening.

“What was happening was wrong and I should have completely dissociated myself from it. I had a choice, and I made the wrong choice NOT to leave. I apologise for this error of judgment.”

Black Country MP Ian Austin (Lab Dudley North) has written to David Cameron and to Sayeeda Warsi, the Conservative Party chair, to demand details of an internal Conservative Party investigation into the affair.