I was living in doha and moved to uk,and the fact is they have now introduced a curb in non-european passport holders,so unless u have EU passport it is very difficult to get a visa and ithink they only allow 24000 Non Eu passport holders from the whole world and this 24000 should be high skilled.so try ur luck.u can apply through british embassy at sherif building opposit toyota signals that is next to airport.