A UK tourist visa for a Thai wife or Thai girlfriend is also commonly referred to as a holiday visa to the UK. This visa is issued to a Thai national to allow them to travel to the UK on vacation to experience the differences in culture between Thailand and the United Kingdom, meet their family and make sure that, if you both want to, your Thai girlfriend or Thai wife will feel comfortable settling in the UK before you continue your thoughts about marriage.
The UK tourist visa for a Thai national is available for 6 months, 1 year, 2 years and 5 years, but keep in mind that you can only spend 6 months in the UK for one year.
Thus, if you are granted a 6-month vacation for your Thai girlfriend or Thai wife, after 6 months of living together in the UK, your Thai partner must then spend 6 months in Thailand before reapplying or the UK embassy will consider that these visas are used to live. in the UK illegally.