FYI. folks, in case some of you are unsure/unaware:-
The validity of Police Cert. according to the Thai Embassy, London, is three months IDEALLY.
The above is the direct translation of the answer I received just now via FB Messenger. See screenshot which is in Thai. Acro who issues theses certificates tells me that it is up to the embassy.
Has anybody had different advice or experience dealing with this particular embassy? I am planning to apply for a non O-A for my long-suffering fiance. We plan to arrive in Thailand with our little dog who luckily does not need a visa in early November.