Passport validity and expiry date is very important to be aware of, especially with an extension of stay. For example. My passport expires April 24 2025. My extension is renewed every May 24, currently valid until 2024. I realised the other day that I although my passport is valid until May 24 2025, that I will need a new passport before I apply for my next extension, otherwise I will only get an extension until the passport expiry date. This is no good for me as I always stay in Thailand until end of May for my yearly trip home.
I therefore will be getting a new passport on my return to the Uk in 2 weeks even though I will still have roughly 22 months remaining on it. I do not want to renew it via VFS whilst in Thailand.