He said Mr Fox, MP for North Somerset for 19 years, had "done a superb job in the 17 months since the election, and as shadow defence secretary before that" and had overseen changes that would allow the armed forces to "meet the challenges of the modern era".

BBC: Defence Secretary Liam Fox quits

On 19 October 2010, Tory MP Christopher Chope proposed that instead of ranking as many candidates as they liked in order of preference, voters should only rank the top two if AV were adopted.

BBC: MP calls for limit on voter choice if AV is adopted

The session began with Labour's Sandra Osborne - the MP for Ayr, Carrick and Cumnock - using her debate to claim that 19% of the population in Scotland lived in poverty.

BBC: Westminster Hall