I'm a Star Alliance gold arriving LHR T1 on United, departing T1 on Aegean Air 5 hours later. Aegean is soon, but not yet, a *A member. It looks to me that I can't get admission to the *A T1 lounge, as I won't have an onward *A boarding pass. I see the Servisair lounge in T1 sells 3 hours passes in advance for 18 quid, but nowhere on the web can I see information on what happens if you try to purchase at the door without pre-payment. Does anyone know the price?