As people will know, the meals which can be pre-ordered and paid for in World Traveller are currently only available from London Heathrow. BA just told me via Twitter that thy are looking into it from Gatwick in 2018. I should think so too when they've got 25 long haul flights operating from there! Would prefer it if they just improved the WT catering, but that doesn't appear to be the trend (apart from some Middle Eastern carriers) and unlikely.