Recap after M25 crash by A41 causes traffic delays

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  • The M25 was shut anticlockwise within junction 20 (A41)
  • A "serious" crash involving a motorcyclist led to traffic being diverted, National Highways said
  • There were 90-minute delays and seven miles of traffic back towards London Colney
  • A motorcyclist was taken to hospital "as a precaution", police said
  • They were taken to Watford General for further assessment and a treatment for a leg injury, the ambulance service added
  • The motorway has since reopened and delays eased

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