As we have said, the documents required depend on different circumstances.
This is part of the link and I hope this covers your situation
A. For applicants born ON/AFTER 1ST JULY 2006 to parents who are married/unmarried where the British citizen father is named on the local birth certificate within a year of the child’s birth, and the mother is NOT married to someone else.
B. For applicants born BEFORE 1ST July 2006, to married parents, where the British citizen father is named on the local birth certificate within a year of the child’s birth, and the mother is NOT married to someone else.
COMPULSORY DOCUMENTS
(Please present ORIGINAL documents and photocopies of each document)
ü Birth Certificate on NSO (National Statistics Office) Security paper
ü Parents’ birth certificates
British parent: submit full/long UK birth certificate or Birth Registration/Naturalisation certificate
Philippine born parent: submit NSO birth certificate
ü If applicable, parents’ marriage certificate – submit NSO marriage certificate if married in the Philippines and evidence of termination of any previous marriage (divorce decree nisi, annulment)
ü Submit CENOMAR (Certificate of No Marriage Record) for Philippine citizen parent if not married to the British parent of the applicant
ü If parents are not married, mother’s written consent to the issuance of a passport to her child
ü If applicable, father’s/mother’s death certificate
ü If applicable, birth certificates of all other brothers and sisters (applicant’s siblings)
ü Both parents’ passports from around the time of applicant’s conception and birth
ü Home Office documents for Philippine nationals who have become British Citizens
ü Current or previous passports held by applicant
ü Mother’s antenatal/postnatal/delivery notes, scans and ultrasounds from hospital (from hospital in the UK and in the Philippines), photos of mother pregnant. If unable to obtain original records, please submit copies, which have been attested by the hospital
ADDITIONAL REQUIRED DOCUMENTS
ü Depending on the age of the applicant we may also ask for school records, local photo identity documents, photographs of the applicant growing up, parents' UK documents
Useful Contacts:
(For Philippine Birth, Marriage & other civil registry document)
National Statistics Office
Civil Registration Department, Vibal Building, EDSA
Quezon City 1104
Hotline: +632 737 1111
Website: www.e-census.com.ph / Email: e-census.info@mail.census.gov.ph
(For enquiries about UK birth, death, marriage and civil partnership)
Consular Directorate
Foreign and Commonwealth Office
Room G38, Old Admiralty Building
London SW1A 2PA
Tel: +0044 207 008 0186 / Email: bmdenquiries@fco.gov.uk
(Requests for duplicate of naturalisation certificate)
Nationality Enquiries Team
Immigration and Nationality Directorate
Home Office, PO Box 306
Liverpool
L69 2UX