Motorists are warned to expect severe delays due to accidents on the M25 near to St Albans.
Two lanes are closed clockwise between J21a, A405 (St Albans) and J22, A1081 (St Albans), because of an accident.
The M25 has also been closed, with severe delays clockwise between J23 A1(M) and J27 M11, because of accident investigation work. A diversion is in operation via the A1, A406 and M11, and there is congestion to J22, A1081 (St Albans).
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