Eating at the margins of acceptability

At the O2 Arena in London yesterday for the Kylie concert and first we had to eat. Alas, not a happy experience. We had to go well into the building before finding a restaurant that did not have a long queue. We found the Water Margin and it was offering all-you-can-eat Chinese buffet for £14.50. In the end we could not eat all we could eat. The food was overcooked, tasteless and drowning in oil. Even at London prices, I think it was too pricey for what we got.