Long traffic delays are expected around Potters Bar following a crash on the M25 near Waltham Cross.
A multi-vehicle accident by Holmesdale Tunnel has caused approximately 5.5 miles of congestion with traffic going back to Junction 24 for Potters Bar.
Between junctions 25 to 26, lanes 4 and 3 have been closed following the crash.
This is likely to add around 45 minutes onto normal travel times in the area,
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