At 09:30 on 28th December 2011, Northamptonshire Fire and Rescue Service were alerted to a sprinkler activation at a 2 storey, 2500m² multi-occupied premises in Wellingborough.  Northamptonshire F&RS said that there were a number of seats of fire, indicating deliberate ignition, and it was believed the fire was started following a burglary over the Christmas break.  About 20% of the room of origin was affected by the fires but only one seat of fire, caused by paper being ignited beneath a table, caused the sprinklers to operate. Because of the shielded nature of the fire it is estimated that it took about 15 minutes for the sprinkler system to bring the fire under control. The value of assets in the room of origin were understood to be about £4k.nnThe system was retained in operational condition, having been installed for a previous occupancy and no fire-fighting action was required by the fire service, who deployed a total of seven personnel to the incident.