Apostille vs. Embassy legalisation for Turkey
All official papers from the United Kingdom intended for Turkish authorities must obtain an apostille from the Foreign Office's Legalisation Office. This means you do not need full consular legalisation for an apostille for Turkey. The apostille stamp is the only form of authentication needed to validate British documents for official use there. This simplified route stems from both countries being part of the Hague Apostille Convention. You simply need to route your file through the proper British office, and Turkish institutions will recognise the apostille when they receive it.
Turkey's Hague status & what it means
Turkey joined the Hague Convention in 2004, meaning UK papers with an apostille from the United Kingdom to Turkey are accepted by all public agencies there. The receiving office checks only that the apostille stamp looks genuine and matches your paper. There is no second level of confirmation needed from the Turkish Consulate. This arrangement covers all official documents including business papers, college degrees and personal records like birth or marriage certificates. The sole exception is paperwork requiring official translation for Turkey, which must also be certified under Turkish law.
The Cardiff → Turkey route step by step
Start by making sure your paper can receive the apostille stamp. The office dealing with British documents works by post only; there is no counter you can visit. If you need a certified copy of a vital record like a birth or wedding certificate, order one from Cardiff Register Office at City Hall. They will post this fresh copy to you within a week or so. Once received, you send that exact paper - never the only original you have - to the Legalisation Office by ordinary post. The address to use is PO Box 6255, Milton Keynes MK10 1XX.
What you need for an apostille for Turkey
Prepare your papers by having them completely filled out but not yet signed. The person signing must do so in wet ink before a witness if required. For documents like company records or court orders, check they bear the official stamp of the issuing body. The Legalisation Office rejects any file with corrections or amendments. Once stamped, you may need to get your papers translated into Turkish by a certified translator. The receiving authority usually wants both the original text and the new translation together. Check whether your file needs this extra step before you post it to Milton Keynes.