I visited the ONE WORLD Lounge when I flew back from CDG to LHR on BA in Club Europe at the weekend – a quick tip is once you have checked in downstairs, there are doors that take you direct to Security and Passport Control withouth the need to go back upstairs and queue.
When you have cleared security, take the escalator up to the departures area and head directly to the lounge, the entrance is almost oposite you when you get off the escalator – there is no British Airways sign, you will see American Airlines and Cathay Pacific – its the same one.
Take the elevator up and you will see the Emirates, Etihad and One World Lounge all on the same floor – they all share a tremendous (as a smoker) smoking area outside – an enclosed area – you cannot see anything – but never-the-less a smoking area!
Inside the lounge, there are plenty of seats, magazines (serving the Hong Kong, American and European destinations), great selection of hot and cold food, not many deserts but plenty to eat and drink.
Nice view of the aircraft movement, showers and plenty of sockets to charge up.
All in all a good lounge…