A driver in his late 80s collided with a shop in Donington after becoming ill at the wheel of his car.
Emergency services were called to a hairdressing salon in the Market Place at 10.15am this morning.
The driver of the car, a local man, is thought to have suffered a medical episode at the wheel and was taken to Boston Pilgrim Hospital for treatment.
Motorists are advised the road may be closed for some time while a collision investigation takes place.
Any witnesses, who have not already spoken to police, should speak to officers at the scene or call 101, quoting the incident number.