A former prize-fighter, Walker was a keen amateur boxer becoming British amateur heavyweight champion in 1951. He turned professional and fought 14 professional fights winning 11 with eight knockouts. He was pitted unsuccessfully against Welsh champion, Dennis Powell for the British light-heavyweight title relinquished by Randolph Turpin.
Crime
Walker then drifted into crime, working for East Endgangster, Billy Hill, and eventually being convicted for theft and serving two and a half years in Wormwood Scrubs.
Business
On release he became the owner of a motor garage and manager for his brother, Billy Walker a professional heavyweight boxer. Walker launched London's first discothèque, Dolly's in Jermyn Street, and a chain of cafes, Billy's Baked Potato, with his brother. In 1970 Walker completed a reverse takeover of Hackney & Hendon Greyhounds Ltd. This meant his private company bought a public company and the new merger resulted in a new company called Brent Walker, the property and leisure empire. The company developed the Brent Cross shopping centre on the site of Hendon Greyhound Stadium, during 1972. Walker sold his equity in Brent Cross in 1979 netting £3.7 million in profit. Hackney Wick Stadium remained under the control of Brent Walker until 1991 when the bank took control of it. Brent Walker had a turbulent career through the 1980s, being worth about 250 million pounds at its zenith but eventually collapsing in 1990 after taking over William Hill Bookmakers in a leveraged buy out. Walker was accused of fraud after an investigation by the Serious Fraud Office but was cleared of all charges after a lengthy trial in 1995. He was however made bankrupt and moved to Russia where he ran a series of businesses selling cigarettes and perfume and later opening a chain of betting shops.
Marriage and issue
Walker was married in 1957 to Jean Maureen Hatton who he had known since he was 16 years old, daughter of George James Hatton, a professional gambler and garage owner in Plaistow, and wife Lilian Elizabeth née Attreed. Walker had two daughters and a son. Sarah Georgina Walker, their eldest daughter, was married secondly from 1989 to 1996 to the Marquess of Milford Haven. The younger daughter, Romla, was an actress, including in EastEnders.