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"Previous experience: A mathematician and economist by training, worked for the UK Treasury, director general of Ofgas, the UK gas regulator; policyholder advocate for Norwich Union’s with-profits policyholders at Aviva; non-executive director of Tullow Oil plc; and a member of the Independent Commission on Banking and the Future of Banking Commission.
"Current external commitments: Chairman of Gas Strategies Group Limited; non-executive director of EnergySolutions Inc.; non-executive director of Illika plc; independent director of the Payments Council and non-executive director of Seven Energy International Limited. "
"Other principal external appointments: Non-executive chairman of Gas Strategies Group Limited and Flow plc and non-executive director of G4S plc, Ilika plc, the Payments Council and The Royal Bank of Canada Europe." 
- Director, G4S (since June 2010)