Just for sake of completeness, EI also operated DUB-BHX-BRU for a short while as a 5th freedom, think it was early 90's?
BHX has seen its fair share of 5th freedom long haul: PIA to YYZ and briefly ORD, AI to YYZ and very briefly Uzbekistan to JFK, 9/11 happened soon after and this flight was quickly dropped.
I flew MAN-MUC on SQ and through pure luck I also flew MAD-FRA on LAN Chile about 5 years ago. I say luck as the company I worked for at the time booked it for me and I guess it was the cheapest flight on the day!
Are there any 5th freedom flights left in Europe at all now?