Hi
I am unsure how to view messages on this website so i haven't seen your email.(its says am not connected but i dont know how to do that). The visa with the thai embassy in london only takes a day.
You would have to apply anywhere within 3months of your departure and return otherwise it wont be valid. I am travelling on the 15th October and i just applied for the visa on the 5th October and picked it up the next morning on the 6th. It is next working day.
If you have anymore questions let me know

Hi.
I don't normally post on forums but I just went through the exact same thing as you are going through with the thai embassy in London along with someone else I met there also. If you live in the UK and have residence here you do not need to get the certificate from Nigeria. They will accept any sort of letter from the police in the UK. So a DBS certificate or even a CRB check will be fine but it has to be dated in the past 6months. This was accepted if you point out to them that their website clearly states you do not need ndlea certificate if you live in the UK