Jabird
Well maybe, but a simple BA-BA transfer should keep you in T5 (bar a few exceptions), and there you have your choo-choo train too.
Never used T5, I must admit. But with BA's limited domestic network from LHR, I bet I would end up comming in on BMI or whatever, and then getting stuck in T1 again, with my BA flight imminently departing from T5.
Sorry, no thanks, I would rather take my chances in some other European hub.
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