Children born into a British-Filipino family are automatically granted British citizenship and whilst it is not necessary to record a child's birth with the British Embassy to prove citizenship, I would strongly advise you do so before the child's first birthday as it will make applying for his/her first British Passport far less complicated. In fact, you really need to do so within the first six months of his/her life. You will require the following (and not all of these requirements are necessarily detailed on the Embassy's website!) original documents plus one clear photocopy of each: Marriage Certificate - NSO version Ob/Gynae's medical notes clearly showing the date of conception and estimated date of delivery Copies of all scans and medical notes made during the pregnancy Copies of all hospital notes made during the confinement and birth. Any theatre notes should also be included if, for example, the birth was by Caesarian Section. Passport's details page plus Immigration stamps to prove the British father was in the Philippines immediately prior to and on the date of conception. This should ideally show he was in-country at least 2 weeks prior Proof (eg photos) that husband and wife cohabit Photos of the mother taken during the pregnancy Photos taken immediately after the birth of the baby - full face should be visible Photos showing you as a family with the newborn taken over a period of days The completed application form - downloadable as a PDF file from the British Embassy website LBC pre-paid envelope for the return of all documents Unless you really want to go to the Embassy, I'd recommend you file the application with Moya Jackson, the Hon Con in Cebu and all applications must be made in person. Your wife can apply on your behalf but she will need a notarised Special Power of Attorney in order to be able to do so. You will, after about 4 - 6 weeks, receive your child's extract from the Register of Births Abroad kept by the Embassy (aka "Birth Certificate"). We found Moya to be very helpful - far more so than the career diplomats at the Embassy. Her husband, however, reminds me of the army sergeant, played by Windsor Davies, in "It ain't half hot mum" both in manner and dress! Both are charming people whom we met on social occasions in Cebu.