David Laws has enjoyed a rapid rise through the Liberal Democrat ranks.
Hgained a double first in maths at Cambridge and enjoyed a high-flying career in the City, where he was a managing director at Barclays Bank.
Before entering Parliament in 2001, as MP for Yeovil - the seat of former Liberal Democrat leader Paddy Ashdown - he had a hand in drafting the party's 1997 general election manifesto.
He was also the Liberal Democrats' director of policy and research.
In 2002, he was given the job of shadowing the chief secretary to the Treasury, before taking up his current role.
Mr Laws' time as work and pensions spokesman has been eventful, with his high-profile criticism of the Child Support Agency making waves.