Turkmenistan
Having clocked up nearly fifteen years operating from BHX I should imagine they've built up quite a loyal customer base. Indeed, I seem to remember reading a few years back that the BHX was more profitable for them than LHR which I believe is x2 weekly as opposed to BHX's x4. However, they were recently voted the worst airline in the world in some poll I read so that's hardly a great endorsement but as always for some people as long as the price is right that's all that matters. They managed to survive Air India's presence before as well as the likes of Mahan Air in recent years so with a bit of luck they'll continue to do OK this time around too. It would be a shame to lose one of our more exotic tails.