Originally Posted by
DownUnderFlyer
Yes, the configuration is a 2-3-2. Asiana is using Terminal 1 in Heathrow so you can use the BMI lounge there.
Beware however, as BMI Lounge is airside by gate 14. You need to come back to the dep lounge via a sort of mini-security zone right by the BMI lounge door. DON'T try to get back via the "connections" route- it'll potentially take forever.
OZ leaves from high number gates- eg 45- nowhere near 14.