A second member of the Commons committee overseeing MPs' conduct is facing questions over his expenses claims.
From: news.bbc.co.uk
A flat in his Hendon, north London, constituency had been his main home but he swapped as he spent more time in the capital, he told the Daily Telegraph.
The Daily Telegraph reported that Mr Dismore had claimed £34,000 in parliamentary allowances on a west London flat, before "flipping" the second home designation and claiming £31,000 for a flat a few miles away in his Hendon constituency.
"After about 18 months it became clear to me that with increasing parliamentary demands on my time, I was spending more time in London than in Hendon."
BBC political correspondent Laura Kuenssberg said the claims relating to Mr Dismore "focus more unwelcome attention on the group of MPs meant to safeguard the reputation of the Commons".