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You (and he) must report the separation when you separate. The Home Office is not interested in the ups and downs of anyone's marriage, they just need to know when a couple is no longer together because that has implications for any visa that was issued based on them being a couple.
Yes. As above, you must both report to the Home Office if you are no longer together. It is not only about if you divorce.Peted wrote: ↑Sun Jan 19, 2020 3:37 amis there any risky or serious implication to my own Tier4 visa if I do not report the end of my relationship with my dependent, or do no report it quickly enough? (we'll remain married until we are in our own country, where we can divorce, and this will take a long time).