UK ATC is most certainly not the worst in Europe (just look at Belgium!). They are probably the best in the world, despite the pressure they have to bear from the politicians and their beancounter management. Others have said it - it's often a relief to hear that competent well-trained voice, who's there to help, not hinder, expedite your flight and keep you safe and separated from all those others out there. We should thank them, not have a go at them.