c6ba58cf_int_Business___British_Airways__Customer_Classification
[Definition] Enjoy exclusive access to premium airport lounges around the world with oneworld Emerald or Sapphire frequent flyer tier status. Members of oneworld airline frequent flyer programs with the equivalent of oneworld Emerald or Sapphire tier status can use any lounge offered by any oneworld airline when departing on any flight marketed and operated by any oneworld member airline, regardless of cabin class being flown. Emerald tier frequent flyers can use First Class, Business Class or frequent flyer lounges. Sapphire tier frequent flyers are welcome in Business Class* or frequent flyer lounges. (*does not include Qantas Domestic Business Lounges) Emerald and Sapphire members may invite one guest to join them in the lounge. The guest must also be traveling on a flight operated and marketed by a oneworld carrier. Emerald and Sapphire members may invite one guest to join them in the lounge You must be prepared to show your boarding pass and frequent flyer membership card, with oneworld Emerald or Sapphire tier status, to access a lounge. The following exceptions apply: American Airlines and Qantas offer programs enabling customers to pay to gain access to their lounges. These programs are not part of the oneworld agreement, and members of these programs are not entitled to access lounges under the oneworld agreement. American Airlines AAdvantage® members, regardless of their tier status or class of travel, cannot access American Airlines lounges when traveling solely on North American flights within or between the U.S., Canada, Mexico (except Mexico City), the Bahamas, Bermuda and the Caribbean. For more information, visit the Admirals Club page. Qantas Frequent Flyer Gold members, regardless of their oneworld tier status, cannot access Qantas Domestic Business Lounges. [Customer Classification] 
oneworld Lounge Access for Frequent Flyers by Tier Status
Joint Business - British Airways
Customer Classification