Diocese in Europe = Brits abroad? A common misconception that I still meet when talking to many on the island of Great Britain.
A recent confirmation in St Michael's Paris demonstrates the international nature of many, if not most, of our congregations in Europe. Candidates came from these backgrounds: French, Algerian, Sri Lankan and English. (There were probably more that that is what I remember). The service was in French and English with readings in Tamil. St Michael's has certainly developed from the days when it was known as "the British Embassy Church"! Of the four regular services in St Michael's each Sunday, two are in English, one in French and another in Tamil.
The website of this vibrant chaplaincy is here.