1963 Peerage Act and former Labour MP Tony Benn
Tony Benn's Peerage Act of 1963 is probably not his biggest legacy but, without it, this "persistent commoner" as he likes to call himself, might never have got his career off the ground.
Giles Dilnot spoke to the former MP on his battle to stay in the House of Commons and why he would "not be seen dead" in the House of Lords.
This is part of a series of interviews, entitled Change Makers, in which the Daily Politics talks to people who have radically changed Britain.