Beware - security at Benbecula is unsmiling, excessive and extremely tedious. You may be selected to have your private possessions picked over in full public view.
I went through that surprising experience at Barra however the chap was really nice as everything I had in my rucksack was examined. However I thought that HIAL had finally been convinced to buy proper Xray equipment for their airfields?
Bear in mind if you are in exile overseas and flying in with BA you can save a fortune and buy a through ticket. The flight is actually operated by Loganair, albeit under a flybe franchise.