Apostilling of documents may be required by non-UK resident company owners wishing to use their company registration certificate to open bank accounts in their own country. An Apostille is a special certificate issued by any competent authority designated by a government of a country or state that is a party to the Hague Convention 1961 to 'legalise' or verify the authenticity of documents, and in the UK it is issued by the Foreign, Commonwealth and Development Office (FCDO).
