Firefighters have been tackling a scrapyard fire that closed a section of the M1 in north London, emergency services say.
Junctions one to four of the motorway were closed in both directions due to the blaze near Scratchwood Services and Ellesmere Avenue in Mill Hill.
The fire is believed to have broken out just after 4am on Friday.
A number of gas cylinders are involved in the blaze and a temporary hazard zone was set up in case they exploded in the heat, London Fire Brigade said.
The fire is expected to have caused considerable traffic disruption and will affect those heading in and out of the capital as the weekend approaches.
Train lines close to the area were closed and a number of people evacuated from their properties, though there are no reports of any injuries, LFB said.
Station manager Dave Bird said: "The scrapyard is close to a residential area so a number of people have been evacuated from nearby houses as a precaution.
"We're obviously aware this is causing some disruption so our crews are working really hard to bring the flames under control."
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