@Greg **********

You clearly did not read my post correctly.. i said for a non-o or extension of stay 'in-country' which means in Thailand.. i did not say it was needed in your home country.. so you are telling me I'm wrong and then repeating exactly what i said.. so actually you are wrong in your interpretation of my advice 😉

If you have a Thai marriage certificate written in Thai language already.. you need to take it to your local Amphur to register the marriage. they will issue a certificate, a Kor Ror 2 (for overseas marriages it's a KR22) which you must have to apply for a non-o or an extension of stay in-country.. if you already have this from an earlier registration you will need to check with your nearest immigration office.. because some offices require an up to date certificate.. meaning they won't accept it if its a certain number of years old.. in CM for instance they have always accepted my original KR22.. but this can vary from one province to another.

Changing your residential address from the Uk to Thailand is mostly unnecessary.. and frought with danger.. firstly, if you advise the DWP (govt pensions unit) you no longer consider the Uk to be your permanent home.. you will immediately lose the indexation attached to your state pension.. secondly, you should maintain a Uk bank account registered to a Uk address.. and have any Uk pension or other income paid into that account initially.. that way you can control how much money you bring into Thailand and when.. which could become very important if you are deemed tax resident in Thailand.. and thirdly, some Uk banks are forcing closure of accounts held by expats who try to register their overseas address.. this very action triggers a review and unless you happen to be a 'premiere' customer with substantial funds on deposit.. they will likely ask you to close it.. it's better to simply change your address to a relatives residence. then toggle all communications from your Uk bank to email thereafter.. this also necessitates maintaining a Uk mobile number for OTP's.. as well as communications with other Uk centric organisations.. and this can be done very easily by porting your number from a physical network to a VOIP service.. offerings such as Expatfone will even give you free voicecalls back to the Uk.. and will also shield your location so nobody will know you are not in the Uk when making or receiving calls.. useful if you need to call your Uk bank to resolve an issue.. and if you later decide Thailand is not for you after all.. you haven't burnt your britches so to speak.. lastly, you may want to return to the UK for medical reasons in the future.. given that there is no NHS equivalent in Thailand.. and treatment for more complex conditions (or surgeries) can be expensive here if you dont have health insurance.. so keeping the door open to access the NHS would be prudent.. as a British citizen that may still be possible in the short term.. but one day the govt may decide to start charging non-residents in the same way as they charge foreign tourists.. so maintaining a UK address for as long as possible would make sense.. at least imo!

@Mahmood *******

Non-o based on what.. retirement?

@David *********

You might struggle to get a yellow book if you are not married to a Thai.. or don't have a rental agreement in place for the property you live in.. and even if the local municipality will accept the gf situation he'll need a LTV.. or at least an initial 90-day (eg. retirement) visa stamped in his passport.. if you are here on a tourist visa or visa exempt stamp they are unlikely to issue a yellow book!

@Brook *******

Well the LTO accepted my yellow book when applying for my DL/MCL twice.. see above comment.. but our car is registered in my Thai wife's name.. so i can't say for vehicle registration purposes.. though it's strange they would differentiate between licensing people and licensing vehicles 😉

@Wayne *******

Well not in my case.. the LTO in CM accepted my yellow book as proof of address on both my initial application for a DL/MCL (the temporary 2-yr licence) and on my renewal application (for the 5-yr licenses).. and since I've had both ID's I've never once had them rejected by any organisation when asked to prove my identity or prove my address when presented alongside my passport.. so i guess this comes down to regional variations once again 🤔

@Michael *******

Except you need the yellow book before you can apply for the pink card.. and they are issued by 2 different offices.. you get YB from the Municipality.. whereas you get the PC from the Amphur.. and in our district they are in 2 different buildings about 1km apart.. which is why i explained the process in some detail.. if your Amphur/Municipality is contained in the same building it will indeed save you time.. but you are still dealing with 2 different agencies technically.. at least that's how it works in CM 👍

Does your immigration office actually list this requirement in it's document checklist? It wasn't a requirement when i renewed my marriage visa in CM recently and i haven't sent it on the website 🤔

If you haven't already registered your marriage at your local Amphur.. then you will need to do this and obtain a Kor Ror 2 certificate.. which is needed to apply for your extension of stay.. you should also go to your Municipality and a apply for a Yellow book.. which is the foreigner equivalent of your wife's Blue book.. whilst it doesn't reflect ownership it serves as proof of address.. and removes the need to ever have to get a certificate of residence from immigration.. it can be used to open a bank account and apply for your driving license.. as well as just about every other business relationship (eg. mobile phone contract) or govt interactions.. and once you have that you can return to your Amphur and apply for the Pink ID card.. these will make your life so much easier!