@Nadeem *******
they can’t bannen the kids from thailand but they can refuse them to enter.
They don’t follow your passport in this case.
Except they will be going to school while you are Long Term on. DTV
All depends on the officer sitting there and what day he has. If you want to make sure that the kids can enter without any issues then get them a visa ahead in the uk.
That means they they are already approved