Sewel's decision will raise questions about whether Paul Kernaghan, the House of Lords commissioner for standards, will continue with his investigation into whether the peer broke the code of conduct for the upper house.
If the commissioner finds that Sewel has broken the code of conduct, peers would be asked to vote on action which could include suspension or, for the first time under new rules formalised by Sewel this month, expulsion.
However, Cameron faced renewed pressure over the tone and conduct of the campaign on Wednesday, when Bernard Jenkin, the senior Tory MP campaigning to leave the EU, claimed that one of the prime minister's special advisers had broken the code of conduct.
The commission is examining whether the councillors broke the code of conduct.
Patrick Mercer had been accused of breaking the code of conduct by sponsoring a parliamentary pass for the head of a firm he was being paid by.
The Committee is reviewing whether he broke the code of conduct for States members and will report its findings later in the year.
Labour MP Bill Esterson has written to the Parliamentary Commissioner for Standards, Sir John Lyon, asking him to investigate whether Mr Mitchell has broken the code of conduct for MPs.
In the notion of breaking down the barrier between the public and the private — of bringing the most intimate concerns into the public arena, and breaking the codes of social conduct to allow for the most brazen confessions — Rouch and Morin offered a methodical, theoretically ingenious, and amazingly powerful aesthetic precursor to the social revolution of May '68.
