The House of Commons has launched a last-ditch attempt to block publication of details of MPs' second home allowances.

The Commons Commission, which has been locked in a three-year freedom of information battle over whether to publish the expenses of 14 leading MPs and ex-MPs, had been expected to release the details on Tuesday.

But a spokesman said the Commons authorities were concerned that an Information Tribunal ruling that MPs' addresses should be part of what is released would present a security risk.

"The threats that MPs can face are unpredictable and subject to change," she said, adding that Speaker Michael Martin had sought advice from the security services.

"Having received advice he's concerned that the Information Tribunal may have misdirected itself in law in deciding that home addresses of MPs should always be published subject only to limited exceptions."

The appeal will now be heard in the High Court.

Gordon Brown, Conservative leader David Cameron and former prime ministers Tony Blair and Sir John Major are all included in the freedom of information request in question.

Details of how they use the allowance, designed to allow members to maintain a second home in either London or their constituency, will be released, with expenses for all MPs expected to be follow.

The figures will include everything from spending on mortgages to items from the "John Lewis list" used as a guideline for spending when furnishing a second home.

Cameron said on Monday he had no problem with the details of his claim being released.

"The details are all about to be published thanks to the information commissioner, and I'm happy with that because I've got nothing to hide," he told BBC Radio London.