Originally Posted by
KARFA
so yes you get access to J lounges based on your inbound long haul J bp. Keep hold of it as you’ll need to show it alongside your outbound LHR-MXP bp.
when you arrive in t3 you can head to flight connections T3 and go airside if you want to use the lounges. Make sure you leave plenty of time to get to T5, you need to be getting to security absolutely no later than 35 mins before your scheduled flight time. You can use the BA J lounges in T5 of course on the same basis as above.
I honestly had no idea you could visit the T3 lounges if arriving into T3 and connecting on to T5. I guess I assumed you wouldn’t be able to access the T3 lounges physically or technically. That is very good to know for the future, thanks.