National Highways has confirmed the major motorway is closed northbound between Junction 15 near Wellinborough and Junction 15a near Northampton (Picture: Highways England)The M1 has been forced to partially close after a crash involving a tanker and a car blocks multiple lanes. National Highways has confirmed the major motorway is closed northbound between Junction 15 near Wellinborough and Junction 15a near Northampton. Police and investigating the accident after the tanker ‘came to a rest on its side’ just before 11pm last night. Northamptonshire Police said: ‘The closed section is now from junction 15 to 16. A further update will be issued shortly.’Get in touch with our news team by emailing us at webnews@metro.co.uk.