Spotted 3 menus in the first part of the dining section you see when you are in T5 F lounge. Friendly chap by the name of Flynn was happy to take the order and food came out within a few minutes.
I dare say I saw the opposite to most others here as it's probably quieter than peak morning time. Breakfast menu seems to extend till noon (I thought I read somewhere the bacon, eggs, sausages, etc. all went away around 9.30?) so will report back on the lunch selection once noon ticks over and I feel like eating again!