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David Allan Grindley (born 29 October 1972 in Wigan) is a British former 400 metres runner who reached the final of the men's individual 400 metres (where he placed sixth) and won bronze in the men's 4 x 400 metres relay in the 1992 Barcelona Olympics.
His personal best for the 400 metres is 44.47 seconds and is the fastest time by a British teenager.
Grindley now works as an airline pilot and had a spell playing Rugby Union with Aspull R.U.F.C