Recap of updates after M25 closed near Watford for police

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  • The M25 clockwise was closed between junctions 18 and 20.
  • Traffic coming anti-clockwise was being diverted via the entry/exit slip roads to leave and re-join the M25 (at junction 28).
  • This was done due to a police-led incident, according to National Highways.
  • Hertfordshire Constabulary have confirmed they put the closure in place as a precaution while they deal with a "concern for welfare incident".
  • The closure was being put in place at around 5pm.

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