An investigation into the cause of the fire at the Camper UK garage on Station Road has been inconclusive.
The fire investigation was carried out on Sunday, and the cause was undetermined.
Lincolnshire Fire and Rescue were called to the blaze at 7.21pm on Saturday, January 25, and around 55 firefighters attended in total.
Nine appliances and two hydraulic platforms from across the county attended the large fire, which destroyed the entire contents of the premises.
The fire was located in the workshop area, and hydraulic cutting equipment and three main jets were in use to tackle the blaze.
The fire was fully extinguished early on Sunday morning.
Camper UK is in the process of relocating to new larger premises on Deacon Road. Customers can visit them at their new premises from February 3.