Sorry if this has been asked before. My wife and I have both applied for Canadian Citizenship (after completing our 3 yrs) however we are returning to the UK to take up a business venture which will keep us there for at least 3 years.

Does anyone know if the tests are carried out in the UK(at Canadian cic) or would we have to come back to Canada to sit the test. Do people suggest we inform CIC here in Canada that we are leaving for the UK or should we just inform them of change of address and use our family address in Canada.
I think its best to play it straight,but we just dont know if you can sit the test and if pass take the oath in UK.

Any thoughts would be helpful, Thanks.