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- There has been a "serious" crash on the M25 near Rickmansworth at around 2.30pm, National Highways said
- Motorists were warned of hour-long delays as three lanes were closed
- Police say it was a single-vehicle collision involving a motorcycle
- The rider, a man in his 60s, has been taken to hospital with injuries that are not believed to be too serious, police said
- All lanes have now reopened and the worst of knock-on delays have eased
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