Air france doesn't operate long haul flights from any other city other than Paris. There are a couple of metropole flights between cities not including Paris and to Skyteam hubs in Europe but these are generally marked as 'Hop' flights even if they are operated with AF metal.
KL or SN don't operate from the second largest cities in Netherlands and Belgium respectively but KL use Transavia for RTM operations.
There are very few national airlines that don't operate at all to the second largest city but these are usually quite a way away from their 'hub' e.g. Alitalia with FCO and MXP which is very much like BA's operation between LHR and MAN despite AZ operating a few long haul flights from Milan. This could be the reason that Manchester is generally regarded as England's second city whereas Birminghan is England's second largest city.
I don't think BA will offer any flights from BHX unless they fully engage in the regions because their hub is too close to warrant a flight
KL or SN don't operate from the second largest cities in Netherlands and Belgium respectively but KL use Transavia for RTM operations.
There are very few national airlines that don't operate at all to the second largest city but these are usually quite a way away from their 'hub' e.g. Alitalia with FCO and MXP which is very much like BA's operation between LHR and MAN despite AZ operating a few long haul flights from Milan. This could be the reason that Manchester is generally regarded as England's second city whereas Birminghan is England's second largest city.
I don't think BA will offer any flights from BHX unless they fully engage in the regions because their hub is too close to warrant a flight