Originally Posted by
Tennen
United's lounge at LHR is an exception - it's probably the best United Club in the UA system. As for the other *A lounges at LHR, LH is by far the worst.
Personally, I'd choose:
UA for its showers (and shower amenities
)
AC/SQ for lack of crowds
SQ for its food
LH for convenience of the T2A flights only
AC has Guiness on Tap, if you're into that kind of thing...