http://www.fco.gov.uk/en/travelling-and-living-overseas/births-marriages-deaths/marriage-abroad/depositing
http://www.direct.gov.uk/en/Governmentcitizensandrights/Registeringlifeevents/Marriagesandcivilpartnerships/DG_175716
Depositing marriage and civil partnership documents in the UK
You can't register an overseas marriage or civil partnership in the UK but you can deposit your marriage documents with the General Register Office (GRO). We can do this for you.
To deposit your documents:
you must have been married in a foreign country, but not a Commonwealth country (see list below) or an overseas territory
one of you must be British
you can deposit a civil partnership document from any country in the world (i.e. foreign and Commonwealth countries and overseas territories)
Depositing your marriage or partnership documents isn’t a legal requirement.
You can deposit your documents at any time after the marriage or registration has taken place.
Benefits of depositing your documents
you can obtain certified copies of your documents without having to apply to the authorities in the country where you married.
your marriage or partnership documents will become an official record.
Applying to deposit your certificate
If you live overseas you can apply for this service through your nearest British Embassy or Consulate.
If you live in the UK you can apply through our office in London.
Deposit of Marriage certificate Form
Deposits of Foreign and Commonwealth Civil Partnership Documents Form
We can’t accept personal callers so all applications are dealt with by post.
Ensure you send us all the documents we ask for on the checklist of the form plus two copies of the application form.
You’ll need to send us your original documents with two photocopies so we recommend you send them by special delivery.
Please enclose a self-addressed, pre-paid special or recorded delivery envelope for the safe return of your passport.
We’ll send an acknowledgement letter and return your passport within or just after 20 working days.
Your marriage certificate will then be sent to the British Consulate in the district where the marriage took place.
After certifying the certificate the Consulate will then forward it onto the General Register Office (GRO). The GRO will write to inform you that the documents have been deposited. Please note it can take around a month for the certificate to reach the GRO from our Consulate.
Please note your original certificate will not be returned and once documents are deposited they can’t be released.
The GRO issues black and white certified copies of original certificates and their translation on GRO paper which are usually accepted in the same way as an original copy.
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