Labour MP John Mann is expected to formally request an investigation into Lord Hanningfield after it emerged that he allegedly "clocked in" to claim a £300 daily attendance allowance despite spending less than 40 minutes inside the House of Lords on 11 occassions in July.
There is no suggestion that the former Conservative broke any rules, but he faced calls from the Labour MP for him to be investigated by parliamentary authorities over the practice.
Mr Mann said: "There needs to be a full investigation into how he has been allowed to get away with it. We need to give the House of Lords a proper and transparent spring-cleaning."
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