Isolation to an island--The Anglican Church or the Church of England remained on the island nation due to geographic isolation.
The Anglican Church had the king/queen of England as the leadership of the Church. Becoming a member of the church would also create loyalty to the British royalty. In addition, the Church become one with the traditions of the monarchy in Britain and did not connect to other areas.
One reason could be that since England has colonized most of the countries in the past, the English language has been spread around. Another reason would be since English speaking countries like the US and Britain are powerful economically, knowing English is very important when making trades and business deals.