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| Biffa, 66, has retired from the board of Shanks Group but remains the Slough company’s largest shareholder. Shanks disposes of 25% of London’s waste. When the company became part of Severn Trent Water, Biffa and his partner, Malcolm Lee, bought out the Rechem toxic waste business for £1.8m. They floated it in 1988 and agreed a £171m takeover by Shanks in 1991. Biffa’s remaining stake is worth £15m. Other assets take him to £92m. | ||||||||||||||||
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