Follow these Instructions for your Wife to obtain a Visa for the UK.
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Remember. There must be a reason for her to need to return to Thailand and you must clearly show that in the supporting letter. Whether she has children, owns Land or has a full time job. Marrying you is not enough.
With regards to your visa you can obtain a Multi Entry "Non Imm O" with an extension of Stay based on Marriage at Sawanaket, Lao, currently without any proof of funds. Show them the Marriage Certificate and supporting letter behind, Your Wifes House Book and ID Card and your Passport. If you can keep 400K Thai Baht in a Thai Bank Account for at least 2 Months prior to your application you can go to a local Immigration Office in the Province where you will live and apply for a Multi Entry Non Imm O Visa based on an Extention of Stay for marriage so you will not need to leave Thailand at all for a 12 Month period.
To get married in Thailand please follow this Website. If you have ever been married before please bring with you your original copy the Court issued you with of your Decree Absolute (Very Important).
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