Originally Posted by
LupineChemist
Not with BA themselves but within IAG there are the Aer Lingus UK flights from MAN.
And, if you really want, you can book a BA flight BHX-BHD. It'll have a BA flight number and, when they announce boarding, they even say "British Airways and Aer Lingus departure to Belfast". But it's an Emerald Airlines aircraft, and you'll have paid at least £50 for the privilege of BA branding over that of Aer Lingus, so those TPs would have to be worth it.