 From 1980-1989 Tucker worked in banking supervision; in corporate finance at a merchant bank; on reforming Hong Kong following the 1987 crash, and then the UK's wholesale payments system, leading to the introduction of real-time gross settlement.He was Principal Private Secretary to Leigh-Pemberton, BOE Governor, for nearly four years until 1993.He became Head of Gilt-Edged & Money Markets Division in mid-1994, during a period of reforms in the money markets.