I'm actually perfectly happy with the food offerings at both the F and J Cathay lounges at LHR.
What I like most is the caterer showing some imagination in the food spread, say, scones, clotted cream & jam at teatime.
The noodles are a bit bland compared to the ones at the HKG lounges, which is surprising as the cooking staff seems Sri Lankan or from the Indian subcontinent? Still palatable and more choices than in most other airline waiting rooms.