The ringleader of the arsonists, Dylan Earl, admitted to working for Russia to commit the attack on the warehouses, which contained equipment destined for Ukraine, and had been in contact with Wagner Group operatives in the days leading up to the fire.

Around £1m worth of damage was caused in the arson attack on an industrial unit in Leyton, east London, last year.

Attack on equipment for Ukraine was planned by Wagner mercenaries on behalf of Russian intelligence, prosecutors said.