I'm pleased to say that a recent trip to Bristol Airport showed some improvement. It used to be you could get a dried up muffin or sandwich in one bit of the departure lounge, and some horrible "pub food" type thing from the bar- if they were serving it. But now the sandwich bit has a lovely selection of fresh salads, nice sandwiches, juices, cakes and so on.
Just as an aside, the entire staff there appear to be Polish. Not a plus or a minus, just an observation.