I have a similar question, next month I'm travelling out of LHR with wife and two kids (14 and 7) in tow. We'll be at the airport at our usual lunchtime. Seven year old daughter is not an adventurous eater.
I'm using my Amex PP passes, as I haven't had need to this year and want to use them and not lose them.
Of the two PP lounges in T5 available to me, which is the most likely to either have something nice for the kids to look at and have food that an English seven year old would recognise?
Or would we just be better off scrumming down at the Crown Rivers?