The clockwise M25 is currently closed between junctions 29 and 30 near Thurrock, Essex, following a serious incident.
The multi-vehicle accident happened at 12.30pm and the carriageway is expected to remain closed into this evening’s peak period while police investigations continue.
As the area approaching the incident is heavily congested, drivers travelling south on the M11 intending to use the clockwise M25 are being advised to remain on the M11 to join the A406, and the A13 to rejoin the M25 at junction 30.
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The film had formed part of a commemoration to the Choucair family, three generations of whom died in the fire.
John Nolan, who was found with cigarettes and two lighters, suffered burns on 65% of his body after being alight for around six minutes.
Known as Pily she died in January, seven months after the disaster, having suffered a stroke.