Relatively good.
I came here for sightseeing and had lunch at the restaurant. It’s not as bad as some other reviewers have said. The salesperson kindly showed me how to buy the meal — it was like a buffet, where you can eat as much as you like. The food was served in a really fancy way, and the great lighting here made the atmosphere very inviting.
The food itself isn’t particularly special — about the same as other UK restaurants — but you might consider stopping by if you’re feeling hungry around King’s Cross. There are plenty of chairs, so it’s easy to find a seat, and the calm, quiet environment is quite relaxing.