Its becoming more and more apparent that despite the billions that GAL have invested in Gatwick, improving terminal forecourts, parking, hotels, overall passenger facilities like security lanes and even down to things like airside operations etc. that they still have not attracted any sustainable long haul airlines.
Vietnam Airlines has been one of the only long-haul airlines to stick around for several years at LGW, at least longer than others such as Hong Kong for example.
As far as I can see the only return that GAL are currently getting for their enormous investments is an increase in short haul traffic (easyJet and Norwegian) however the long haul side still lacks, despite Norwegian introducing JFK, LAX and FLL.