Originally Posted by
wiluk
Bear in mind you'll need to clear security twice: once at EDI and once at LHR T4. I'd do all you can to avoid checking it in - they've delayed my bag three times in the past 12 months on T5 -> T4 transfers.
I did not think at LHR you went through security again after coming on from a Domestic Connecting flight... or is that just T5 to T5 flights?