The exit slip road at junction 14 southbound is blocked near Milton Keynes.
The M1 exit slip road within J14 is blocked southbound near Milton Keynes due to a collision.
Lane 1 (of 4) is also closed on the main carriageway just prior to the slip road.
Emergency services are now on scene.
National Highways say there are delays of at least 45 minutes in the area.
The #M1 exit slip road within J14 is blocked southbound near #MiltonKeynes due to a collision. Lane 1 (of 4) is also closed on the main carriageway just prior to the slip road.
— National Highways: East (@HighwaysEAST) September 4, 2023
Emergency services are now on scene.
There are delays of at least 45 minutes in the area. pic.twitter.com/MlWYRIz9Yh