that's true of LHR as well, there is a Concorde Room just after the priority security scan lane, and first class or top tier BA pax get invited. the place is insane in terms of 'premium-ness' with the experience being s whole level above the usual BA first class lounges - you'll find the full details on the ba.com site. sadly i only managed to use it once or twice, when my boss guested me in ;(