Times columnist and former Conservative MP Matthew Parris says it is refreshing to hear politicians use language that has not been culled from a staff training manual.

BBC: David Cameron

As well as politicians, the campaign is backed by other high-profile figures, including singers Elton John and George Michael, and journalist and former Conservative MP Matthew Parris.

BBC: UK party leaders back global gay rights campaign

Political commentator and former MP Matthew Parris - whose marathon PB of 2:32:57 is still a House of Commons record - is not sure anybody could let their PB slip their mind.

BBC: Paul Ryan marathon claim: Would you fib about your PB?