the Uk visit visas has an expiry date of one year from being issued. You can enter the country as many times as you like but can only stay a maximum of 6 months in any one visit.
The visit visa can also be issued for 2,5,10 years. You have the option to choose. But the same process as the 1 year visa you can only stay a maximum of 6 months each time you enter the Uk
If she came to the UK at the start of her 1 year visit visa, I presume August she still has 6 months remaining on that visa so she can technically fly to another country and then re enter the Uk for another
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months. If her 1 year visit visa ends in 3 weeks she must return and reapply
It’s very simple and straightforward. I’ve done this 5 times now for my GF. just complete the form online. Then gather all your information to back up your relationship ie video/phone calls and photos of you both.
Proof of reason to return i.e rental agreement/home ownership and details of any dependants. She doesn’t need to have work as you will be sponsoring her in the UK
I’ve just had a message from the Thai Embassy saying they’re dealing with January flights at the moment and will be in touch soon. Thanks to everyone who contributed with informative advice