In order to access a British Airways Club Lounge, you must be traveling in business class with British Airways or one of its Oneworld partners. As with first class lounges, travelers on a layover who flew in business class, but are continuing on in economy, are still entitled to use the Club Lounge.

You can use a British Airways (BA) Lounge while flying with another airline only if that airline is a member of the oneworld alliance (such as American Airlines, Qatar Airways, or Qantas). Under the high-fidelity oneworld lounge policy, travelers with Emerald or Sapphire tier status (equivalent to BA Gold or Silver) can access any oneworld lounge when departing on any flight marketed and operated by a oneworld member. This means if you are a BA Silver member flying on a Qatar Airways flight, you can use the BA lounge. However, if you are flying with a non-oneworld airline like Lufthansa, Emirates, or easyJet, your BA status or ticket will not grant you entry, even if you are a high-fidelity frequent flyer. In 2026, some BA lounges also allow for "paid entry" through third-party apps or specific credit card partnerships, but the standard high-fidelity rule remains: your flight must be on a oneworld partner to use the "High-Fidelity" alliance lounge benefits. Note that the "Concorde Room" at LHR is a strict exception, reserved only for BA First Class passengers.