A1 reopens after serious accident south of Grantham | Updated: 18:59, 14 March 2021 The A1 was closed northbound between the A47 and the A43 today (Sunday, March 14) but has since reopened this afternoon. The road was closed due to accident investigation work between the Stamford/Burghley House turn-off and the A43 Kettering Road (Wothorpe / Easton On The Hill Turn Off). Northbound entry from the B1081 was also closed. The accident was reported at about 4am. Police and paramedics attended the scene. The A1 northbound is closed this morning south of Grantham following an accident near Stamford. (45020440) Drivers were asked to follow diversions. There were reports of a mile of congestion and delays.