David Howarth becomes the party's justice spokesman - a role that was being filled by Chris Huhne.

BBC: Clegg reshuffles top Lib Dem team

David Howarth, the Liberal Democrat's justice spokesman, has called for a "full-scale inquiry".

BBC: Met suspends G20 footage officer

But one of Mr Huhne's supporters, MP David Howarth, criticised the polling of the party's supporters rather than members, who are eligible to vote.

BBC: The winner is set to be announced on 2 March

The signatories include former Conservative leadership challenger David Davis, ex-ministers Tim Loughton, Sir Gerald Howarth and Sir Jim Paice, and the former Archbishop of Canterbury, Lord Carey of Clifton.

BBC: Same-sex marriage: 'No mandate', say MPs