Putting this here as not sure where else.
I have lost my marriage certificate and am not sure how to proceed. There is a thing called UK Official Services online that says they will send a duplicate for a fee but I am not sure if this is legit. There is a gov.uk site that says you have to approach the district you were married in, but also a service where you can get copies (although this seems to be genealogical in nature).
Has anyone else lost one and got a replacement, and can advice best course of action?