2 frequent flyers and qantas club members, myself being gold, and mum being platium just got 7GBP each for a “light refreshment” during our 4 hour delay
we got delayed at heathrow last time we came home - and I’m fairly sure we got a lot more than that. I remember just buying LOADS of chocolate and lollies with it. Although, I was 11, so perhaps my memory is a little skewed.. but I swear it was more than 7GBP.