Originally Posted by corporate-wage-slave

More information here, given that LHR has some good restaurants (etc) I personally would be reluctant to recommend it
https://www.flyertalk.com/forum/brit...s-reviews.html
however if it is part of your travel, then you can I believe pay to reserve a place.

Premium Plaza on the other hand, whilst not exactly cheap may actually be value for money, if you are there 2 or 3 hours.
https://www.flyertalk.com/forum/brit...de-lounge.html