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My name isXXXXX and I am a Solicitor based in London. I'm happy to help with your question today.
I think you are asking whether the test has to be done in your home country or whether it can be taken elsewhere.
There is no requirement that the test has to be done in your home country. You can go to another country e.g. Colombia, and take the test there if you wish.
Thank you that is so good to hear. If we apply for the student visa and take test here then wold she have to go back to apply for the fiancee visa? Is our best option to take it in a different country?