@Paul ************
that's not true anybody can visit the uk just need to prove they will not be a drain on government resources and they will not stay. I am married to a thai girl and when we go to the uk she just applies for a Visa for herself I dont sponsor her. We tried the sponsor route years ago and much easier if your wife just says she's single and wants a holiday. She will need to have around £150 per day in her bank, the visa is for 6 month but say she only coming for 10 days then change the flight china eastern is free to change. Also need to show that she will return to Thailand like having property, a job, family here. My wife has a separate bank account which she sends money to each month and named holiday fund so bank statements show this, her normal bank statements show her salary going in but never has money in at the end of the month but Visa not care about this as long as it looks like she can support herself and will return it's very simple