You might want to have a look at these recent threads on the various T3 lounges:-

• https://www.flyertalk.com/forum/brit...t-ba-gold.html
• https://www.flyertalk.com/forum/brit...ld-lounge.html

And for ATH, here's the basic information: https://www.flyertalk.com/forum/19761462-post16.html, and here's some recent discussion:-

• https://www.flyertalk.com/forum/brit...lse-alarm.html
• https://www.flyertalk.com/forum/brit...ns-lounge.html