Labour MPs who voted for the war and who are now expressing severe doubts over the US request include such senior figures as Sir Gerald Kaufman and once-supportive backbenchers including Eric Illsley, Geraldine Smith and a host of others.

BBC: Analysis

As well as Conservatives who want Leveson, there are Liberal Democrat and Labour MPs who oppose statutory regulation in principle - Labour's Sir Gerald Kaufman, for example is an ex-Mirror journalist and is vehemently against any scintilla of statutory regulation.

BBC: Week ahead