|Chief whip - Patrick McLoughlin
The former miner has been MP for West Derbyshire since 1986.
When the Conservatives were in power, he was a minister at the departments of transport, employment, trade and industry, and in the whips' office. In opposition, he became deputy chief whip in 1998.
Mr McLoughlin has an unusual background for a Tory MP. His mother was a factory worker and he worked as a farm labourer before
following his father and grandfather into the pits.
He spoke out against Arthur Scargill in the miners' strike, when he was a strike-breaker.