The man who died is thought to be in his early 50s.
The other man, reportedly in his 20s, suffered spinal and leg injuries and was taken to Addenbrooke's Hospital in Cambridge.
An investigation into the accident is underway.
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Some will see further rain this evening, but the wet weather will gradually clear leaving a drier end to the night. Staying cloudy.
A further band of mostly light rain east across the region. Staying mild.
Early rain this morning, some afternoon brightness, Mild.