Warning of delays on the M1 at Northampton ahead of rush-hour traffic

Drivers are being warned of delays on the M1 around Northampton heading into the Tuesday rush-hour time.
Traffic updateTraffic update
Traffic update

The RAC reported at 4.10pm that one lane was closed and traffic had slowed due to a broken down vehicle on M1 Southbound from J15 A508 (Northampton) to J14 A509 (Milton Keynes)