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The British Airways Galleries Club South at London Heathrow Terminal 5, conveniently located close to the main security checkpoint, is one of the [three business class lounges](https://loungereview.com/lounges/airport/LHR/operator/BA/) that British Airways operates at Terminal 5, and by far the largest. The dimensions are so humongous, in fact, that if you’re visiting for the first time, you may want to take a tour to spot all the amenities – the facility can be akin to a maze at first. [](https://cdn.loungereview.com/wp-content/uploads/2014/12/LHR_BA_C_T5S_7896_w_800x600.jpg)