London Heathrow terminal 2 (Queen’s terminal) has a lot of Star Alliance Lounges.
- Air Canada Maple leaf lounge
- Lufthansa Business lounge
- United Club lounge
- Singapore Airlines Silver Kris lounge
The first 3 are business class lounges whereas Singapore Silver Kris lounge has both business and a first class lounge. Passengers traveling in First Class in any of the star alliance carriers (Singapore Airlines, Thai Airways, Air India) have access to this lounge. I’ve visited this lounge a few times while flying Thai Airways first class and Air India first class. Here are some pictures from my visits.