Something is desperately rotten in the British Isles.
Well, if America is around 70% white, then why are all the maids and hoteliers in the US hispanic?
For as long as I can remember, medicine has attracted doctors from ethnic backgrounds in the UK. Many Indian families, for example, see it as a honourable profession. It is not dominated by Muslims as you state.
With regards to the Muslim terror attacks and attempted terror attacks on the UK: The UK was hit harder by the IRA for decades. Was something desparately rotten in the UK then? Would you tar the entire UK Irish community with the same brush as the terrorists?
Ethnic groups are often found in the same line of work. Convenience stores in most areas of the western world that I have visited have been run by Indians.
Britain has been one of the few countires in the West to stand with the US properly in the WoT (despite having had two centre-left politicians recently).
Having lived in the UK all my life, I can guarantee to you that Britain is fine.