David Mundell grew up in Newton Wamphray and Lockerbie. Attending Lockerbie Academy in Lockerbie, before going on to study law at the University of Edinburgh , also gaining a Diploma in Legal Practice. He has also received an MBA from the University of Strathclyde Business School.
He went on to work as a solicitor before joining BT as Group Legal Advisor for Scotland in 1991. He became BT Scotland's head of national affairs, remaining with BT until becoming an MSP.
He was a councillor in Annandale and Eskdale from 1984-6 and on Dumfries and Galloway council for another one until 1987, when a student. He is a member of the Law Society and Writers to the Signet.
He was elected to the Scottish Parliament in 1999 and 2003 as a list MSP for the South of Scotland.
In the 2005 general election, he was elected as MP for the Dumfriesshire, Clydesdale and Tweeddale constituency. He was the Shadow Secretary of State for Scotland and a member of David Cameron's Shadow Cabinet.
He currently lives in Moffat. He has one daughter and two sons.