Three casualties were cut from vehicles involved in a collision between Caythorpe the heath last night (Tuesday).
Fire crews from Grantham and Brant Broughton were among the emergency services called to Caythorpe Heath Lane just before 6pm.
Hydraulic equipment was used by firefighters to free those trapped.
The road was closed by police for several hours while the casualties were treated and the road cleared.
More to follow.