It was closed Tuesday and remains closed Wednesday due to the fires but does not appear to be in imminent danger.

In one video, at least two minibuses are seen with their windows blown out and what appear to be casualties lying amid rubble and debris on the road.

And, intriguingly, No10 appear to be leaving the door open to change their mind.

Dental fluorosis — a condition that occurs when teeth get too much fluoride and appear to be stained — was also used to assess exposure.

Farage's repeated statements distancing himself from the far-right activist Stephen Yaxley Lennon, who calls himself Tommy Robinson, appear to be at the heart of the spat.