One world alliance for connecting pax on BA and Flybe ?
Well, that doesn't make sense.
Can't see many using BA from LHR to connect at MAN (It's the only BA flight out of MAN).
One world airlines:
Cathay - T2, Finnair T1, Qatar T2, & of course Flybe are not One World, but have connection deals with Emirates, Etihad (both T1) & Cathay & Qatar (both T2)