Originally Posted by
salvadors

I thought people had said here before that the website was wrong on that one, and that as long as your final destination was outside Z1/Z2 it was acceptable. Did I Just imagine that, or has it changed?
I thought that was the scenario where both the starting and ending zone were outside of Z1/Z2.
The bmi website specifically states a scenario where the final destination is outside of Z1/Z2:
Originally Posted by Diamond Club 'How to Spend Miles' page
No stop-overs are permitted within Europe. Outside of Europe one stop-over is permitted. A stop-over is a lapse of at least 24 hours between your arrival and departure at any transfer point, i.e. if travelling from London Heathrow to Singapore via Frankfurt, you would not be able to stay in Frankfurt for more than 24 hours.