 After National Service in the Royal Army Pay Corps, Sir Peter joined HM Treasury, ultimately ascending to become Permanent Secretary from 1983 to 1991.Sir Peter joined Barclays in 1991 as Group Deputy Chairman and Executive Chairman of Barclays de Zoete Wedd (BZW).He became Chairman of Barclays Capital following the reorganisation of BZW in October 1997 and was appointed Barclays Group Chairman in April 1999.