Petchey started a car hire and car sales business. From his profits he invested in property and timeshare which grew into a business empire valued over half a billion
pounds by 2007. He became known as the grandfather of
timeshare, and amassed his fortune with marketing in UK and abroad. It was the resort in Albufeira, Portugal, where the real timeshare boom took place, right up to late 2000s, when the whole conglomerate of leisure businesses was sold. In 1969, he was involved with property development, becoming one of the most successful businessmen in Britain. Petchey's involvement in football first came when he was appointed a director of
West Ham United in 1978. He then went on to own
Watford Football Club which he bought from
Elton John in 1987. He resigned as chairman in March 1994 and sold the club back to the singer. ==Philanthropy==