A few more questions:

1) If I check through to EDI how do you clear customs @ EDI? (I presume the LHR-EDI flight = domestic?)

2) I usually use the BA T4 arrivals lounge or Terrace lounge. I know they have excellent shower facilities.

Comparing to the AA Arrivals Lounge, should I use the Arrivals Lounge or the BA Terrace lounge in T1? Also how many BA lounges are there in T1?`
Does the AA Arrivals Lounge serve Breakfast?

I will be travelling in J or F on CX to LHR and I am a Gold CX MPO (= Sapphire Oneworld) But from LHR-EDI i will be in Y Class
Am I allowed to use the shower facilities in BA? What about my partner (she is only a Ruby Oneworld) Can I take 1 guess into the Lounge and also she can also use the Shower facilities?


What about the MB Facilities?


3) I presume if I leave myself 3 hours, I can:
a) use Fast Track to get through immigration
b) use the AA Arrivals Lounge
c) take the underground tunnel to T1
d) go through security
e) use the BA Lounge again! (Prehaps for a second shower?? hahaha)
From memory I don't need an invitation to use the terrace lounge in T4. Is it the same for T1?

Thanks