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Sian began her career with Accenture, where she helped launch Sainsbury's first online grocery shopping service and the Nectar loyalty card programme.
She joined BT in 2004 and held a number of strategically important positions, including leadership of BT Infonet, a US-based subsidiary business with a turnover of £700 million.
Prior to this, Sian was responsible for BT's £300 million wholesale broadband portfolio, doubling the speed and coverage of copper broadband availability during her tenure.
She also led BT's entry into the wholesale content distribution market, at a time of explosive growth in streaming video and TV services over broadband, including YouView and BT Sport.
Sian has also held a number of Chief Information Officer and Digital Strategy roles at BT and Clarks.
She is currently a non-executive board member for the UK Statistics Authority and a Vice President of The Institute of Customer Service.
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