SHARM el-Sheikh is a hugely popular destination for British holidaymakers which makes the growing evidence that a bomb brought down a Russian airliner last weekend all the more alarming.With flights set to resume between Britain and the Egyptian resort, amid tight security measures which have been agreed between the two countries, David Cameron confirmed it is “more likely than not” that the passenger jet which crashed on Saturday, killing all 224 people on board, was downed by a terrorist bomb.