mrskytec - it'll be flown 6x per week
For all of the worries that people express, I don't think this is such a great risk for EZY. There are plenty of people in North London and Israel who'll happily fly economy on BA or bmi on this route - and many of the residents of North London will have flown EZY in the past. Loyalty to LY has its limits - offer a round-trip for £100 less per person, and a family of four will start to reconsider.
Non-alcoholic drinks will sell well, but the food on the trolley might not go quite so well and will certainly need the odd tweak - the bacon baguettes are not going to be in high demand. Expect to see quite a few people bringing their own sandwiches