Overview
- Both carriageways are closed between J12 near Mountnessing/Brook Street and J15 near Margaretting/Three Mile Hill after a serious collision.
- Essex Police report the crash on the London-bound side at Ingatestone and say all emergency services are at the scene.
- National Highways describes the incident as police-led and reports delays of about 60 minutes northbound and around 15 minutes southbound.
- Entry slip roads are closed at several points, with heavy congestion reported in Margaretting, Ingatestone, Shenfield and Brentwood.
- National Highways has issued diversions: northbound via the B1002 and A414 to rejoin at J15, and southbound via the B1002 toward Brentwood.