Overturned car causing long delays on Northamptonshire stretch of the motorway

Queues are stretching back to junction 17 of the M1 on the northbound side.
Queues are stretching back to junction 17 of the M1 on the northbound side.

An overturned car is causing major delays on motorway users heading through Northamptonshire.

Two lanes are blocked on the M1 northbound and traffic is queuing due to a collision between two lorries and a car between junction 17 for the M45 and junction18, A428.

The overturned car is in lane one and the AA is reporting delays of 20 minutes and rising. Queues are stretching back past Watford Gap services.