The air ambulance was called after a crash on the A6 this morning (Tuesday).
Police say they attended a collision just outside Finedon, heading towards the A14, at about 7.10am.
Two vehicles were involved and the air ambulance was called.
None of the injuries are believed to be life-threatening or life-changing.
A police spokesman said the A6 remains closed at the junction with Cranford Road and is expected to open within an hour.