Matthew Elliott, chief executive of the Taxpayers’ Alliance, has written to the HRMC demanding an investigation of a donation by Ken to the Labour Party.
“There now appears to be prima facie evidence that Mr Livingstone was channelling untaxed income paid to Silveta Ltd directly to the Labour Party as a political donation-in-kind, which I understand to be a stark breach of HMRC rules,” he wrote.
“I reiterate my belief that the employment of [staff] for Mr Livingstone’s campaign cannot be defined as expenses incurred ‘wholly and exclusively’ for the purposes of Silveta’s trade.”
It was claimed that Ken broke HM Revenue and Customs rules by offsetting the £19,202 donation to the Labour Party made through his private company - Silveta against tax.
HMRC say expenses can be claimed only when “wholly and exclusively” incurred for the commercial purposes of a company.
Mr Livingstone has said that Silveta was formed only to handle personal earnings from media appearances, writing and after-dinner speaking.
Silveta’s “articles of association” —which define what the company is for — make no mention of politics.