TORY Leader David Cameron has said he would be willing to tell Oxfordshire voters how rich he is – but only if new Parliamentary rules demanded it.

Witney MP Mr Cameron, who has so far refused to reveal the extent of his wealth, told the Oxford Mail he wanted officials to consider whether rules on the disclosure of MPs’ income should be “improved” and pledged to abide by any new guidelines.

His comments follow calls by a senior Tory MP for Parliament to consider increasing financial disclosure as a way of rebuilding confidence in the political system after the expenses scandal.

Andrew Tyrie, a former member of Mr Cameron’s Democracy Taskforce, told the Committee on Standards in Public Life, which is undertaking an inquiry into Parliamentary allowances, importing American rules that force members of the US Congress to reveal their income from rent, dividends, capital gain and interest might be a “necessary intrusion” into British MPs’ privacy.

Last Sunday, Mr Cameron told the BBC’s Andrew Marr Show that his house in London was his biggest asset, but failed to expand further about his personal wealth.

Asked about a Sunday Times estimate that his family was worth £30m, he said that figure was “absolutely ridiculous”.

The New Statesman, a left-wing magazine, has since estimated his wealth to be £3.2m, while claiming 18 members of the shadow cabinet are millionaires.

Labour strategists are reportedly planning, in the run-up to the next general election, to paint Tory high command and its supporters as part of an elitist “Oxfordshire set”, which likes to hunt and shoot.

The Conservative leader, asked whether he would support proposals for greater financial disclosure, said: “We do have good rules on disclosure of income and interests. I think this new independent authority should look at whether they need to be improved, and I would abide by any new rules that came in.”

The Eton-educated MP said: “People are entitled to ask lots of questions about your life, who you are and all the rest of it, and I’m always very happy to discuss these things.

“But I think what really matters is do you have the right ideas, do you have the right proposals, do you understand what needs to be done, rather than thinking this is dependent on where you live or went to school.”