The motorway is currently closed in both directions between junction 21a and 22 due to smoke generated from the incident. Road closures are also in place in Colney Street and Old Parkbury Lane near to the centre of the fire - a warehouse in Ventura Park. Officers and the fire service are at the scene. An air ambulance has also been spotted circling in above the incident. Motorists are advised to avoid the area and seek alternatives routes at this time.