The car travelled at speeds of up to 112mph shortly before the crash, the police watchdog found.
A social media appeal tracks down the nurse, who helped a teenager through treatment, to Derbyshire.
David Stokes was fixing a vehicle in a lane on a dual carriageway when he was hit by a car.
John Ward says his cancer was caused by his time on Christmas Island during the nuclear tests in 1957.
Send us your questions about the area and we'll investigate.
Derby will travel to Reading in Frank Lampard's first game in charge when the Championship season starts on 3 August.
Derbyshire look set for a first innings lead over Glamorgan thanks to half centuries from Hughes and Slater.
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