In 1985 Gent joined Vodaphone managing director of UK network, in 1988 he became a board member and in 1997 he became CEO. Whilst CEO he increased Vodaphone's market value from £7.5billion to £77billion. He stepped down from his role Vodaphone in July 2003.
- Tim Weber Christopher Gent profile The BBC, 18 December, 2002, accessed 25 September 2014
- Telegraph Staff Sir Christopher Gent to exit GlaxoSmithKline The Telegraph, 28 Oct 2012, accessed 25 September 2014
- James Blitz Osborne outlines plans for tax reform commission The Financial Times, 12 October 2005, accessed 25 September 2014