The M25 was brought to a standstill this morning after horses found their way onto the motorway.
Motorists are told to expect long delays after police had to put in a rolling road block due the incident near Radlett.
Four horses were reported to be on the anticlockwise carriageway between Junction 23 and Junction 22 London Colney at around 7.30am.
Police have since reopened the motorway but delays are still expected
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