Join Date: Oct 2006
Location: London, UK
Programs: BA Gold, VS Silver, SQ Silver, IHG Plat Amb, Hilton Gold, Marriott Plat, Accor Silver, Radisson Prem
Posts: 16,873
The oneworld website is incorrect when it comes to LIS - BA definitely just use the BA lounge.
You may be able to use one of the others if you have Priority Pass, but not totally sure.
The Blue Lounge is grim.