Probably nothing to do with a "Fire Risk" at all. More to do with the lack of food being bought in the Messes and the lack of caterers "milking machine" profits being made.
It does make me wonder if any former "Senior Staff" joined that company too?
If I recall correctly the new Catering Contracts effectively banned all Tea-Bars and Butty swindles in all Squadrons/Sections as they were seen as "Competition". (I dont know how successful that was)
It is just an extension of the "poor" Contractors power to make all singlies eat in the messes too. Watch this space for attempts to ban service personnel from eating outside the camp gates.
I believe it was only gritted teeth that got SPAR to remain on most Camps...but for how long?...and then watch the "local" prices rise...