Does a translation of my UK marriage certificate need to be certified by the Thai Embassy in London?

I am asking in relation to obtaining a Kor Ror 22 for a 1-year extension based on a marriage in the UK. My question is specific to a UK marriage certificate and getting the correct documentation in place.

My understanding of the process is as follows:

1. IN THE UK: Marriage certificate legalised by the FCDO in Milton Keynes

2. IN THE UK: Mariage certificate verified by the Thai Embassy in London

3. IN THAILAND: Marriage certificate translated

4. IN THAILAND: Translation of marriage certificate verified by the Ministry of Foreign Affairs

I am asking for clarification as to whether or not the Thai Embassy in London need to verify a translation of the marriage certificate, or if that only needs to be done by the MFA in Thailand.

Thank you!