I’m a PhD student in UK with T4 visa, along with my husband and children who are dependents holding T4 dependent visas.

After getting the award letter, during the wrap-up period and before my visa expires, I plan to visit my country for three days to do some job interviews. I also want to leave my children with my husband at UK since it will be school time.

I’ve been advised to enter the UK using a visitor visa instead of using my T4, even its still valid, as I already finished my course.

If I applied to a visitor visa would this mean that my T4 visa will be cancelled?

What will happen to my husband and children in this case (would their visas be cancelled as well even if they remained in the UK)?