Alistair Carmichael Under Pressure Over Leaked Memo

Former Cabinet minister Alistair Carmichael has come under further pressure to quit as an MP after he accepted responsibility for a leaked memo which alleged Scottish First Minister Nicola Sturgeon wanted David Cameron to win the general election.

Senior SNP MP Stewart Hosie called for the Westminster standards watchdog to investigate whether Mr Carmichael had broken any rules and said he should 'consider very seriously stepping down' from his seat in Westminster.

Mr Carmichael apologised to both Ms Sturgeon and the French ambassador to the UK after a Cabinet Office investigation into the leak concluded he 'could and should have stopped the sharing of the memo', and he added that he 'accepts responsibility for what occurred'.

After the leaked memo appeared in the Daily Telegraph before the election, Cabinet Secretary Sir Jeremy Heywood ordered an inquiry into how the note, which claimed Ms Sturgeon told French ambassador Sylvie Bermann that she would prefer to see Conservatives remain in power, got into the public domain.

The leaked document was written by a British civil servant following a conversation with consul-general Pierre-Alain Coffinier regarding a meeting between Ms Sturgeon and Ms Bermann.

The investigation into the source of the leak found an official mobile phone held by Mr Roddin was used to make calls to one of the journalists involved in the story.

The special adviser confirmed he had provided a copy of the Scotland Office memo to the journalist and discussed it with him, believing it was in the public interest to do so.

Mr Carmichael then confirmed that Mr Roddin had asked for his view on the possibility of sharing the document with the press and that he had agreed this should happen.

Accepting his responsibility for the leak, Orkney and Shetland MP Mr Carmichael said: 'I should not have agreed this. It was an error of judgment which I regret. I accept full responsibility for the publication of the document. Had I still been a government minister, I would have considered this to be a matter that required my resignation. I have therefore informed the Cabinet Secretary that I will decline my ministerial severance payment.'

The Liberal Democrats said party officials would not be launching any internal disciplinary proceedings against Mr Carmichael.

He has given up £17,000 of ministerial severance pay,'a spokesman said.' We feel that is sanction enough.'