I would presume that the Highway agency would of had to have ok'd this event due to the position of the motorway and the closeness of the rubgy Club.
Highways Act 1980.
Danger or annoyance caused by fires lit otherwise than on highways.
(1)If a person?
(a)lights a fire on any land not forming part of a highway which consists of or comprises a carriageway; or
(b)directs or permits a fire to be lit on any such land,
and in consequence a user of any highway which consists of or comprises a carriageway is injured, interrupted or endangered by, or by smoke from, that fire or any other fire caused by that fire, that person is guilty of an offence and liable to a fine not exceeding level 5 on the standard scale.
(2)In any proceedings for an offence under this section it shall be a defence for the accused to prove?
(a)that at the time the fire was lit he was satisfied on reasonable grounds that it was unlikely that users of any highway consisting of or comprising a carriageway would be injured, interrupted or endangered by, or by smoke from, that fire or any other fire caused by that fire; and
(b)either?
(i)that both before and after the fire was lit he did all he reasonably could to prevent users of any such highway from being so injured, interrupted or endangered,that he had a reasonable excuse for not doing so.
We already have heard that one pyrotechnic company refused to hold an event in the rugby club due to the proximity of the motorway.
Yes, that section of the motorway goes over the River Tone so it's possible there was fog rising off of that.
The weather was also bad all day here in Somerset with heavy downpours and patchy fog and mist.
I will wait to hear from the Police accident investigations and not speculate.