This is from Augusts requirements for obtaining a local CNI from the Embassy if you already have a UK Issued one

¨ CNI fee (£ 65 for the issue of the CNI) payable only in Philippine pesos, in cash, calculated at the current Consular rate of exchange.

1. For British National applicant born in the UK:

¨ Original UK passport. If applicant is overseas, a certified copy of the data page; a photostatic or electronic copy of the certified page is not acceptable.
¨ Original UK-issued CNI, or original Notice of Marriage, issued by the British Embassy abroad. Please note that a CNI issued in Scotland should be presented to the British Embassy Manila within 3 months of it being issued.
¨ CENOMAR with details matching those on the passport.
¨ If widow/widower, present original death certificate of deceased spouse, or a certified copy. If spouse died in the Philippines, present
O death certificate of deceased spouse
O Advisory on Marriage (CRS Form 5) in lieu of a CENOMAR
O Marriage certificate with proper annotation declaring, if applicable, the presumptive death of spouse
¨ If divorced/annulled, present original divorce decree absolute/annulment papers, or a certified copy. If annulled in the Philippines, please present the following documents:
O Advisory of Marriage Record (CRS Form 5) in lieu of a CENOMAR
O Certificate of Finality and full court documents, including decision
O Marriage certificate, with proper annotation declaring the marriage null and void
¨ If you have previously obtained a local CNI from the British Embassy Manila or Honorary Consulate Cebu, you must then obtain an Advisory of Marriage (CRS Form 5) from the NSO in lieu of a CENOMAR.

And this is Octobers

¨ CNI fee (£ 65 for the issue of the CNI) payable only in Philippine pesos, in cash, calculated at the current Consular rate of exchange.

1. For British National applicant born in the UK:

¨ Original UK passport. If applicant is overseas, a certified copy of the data page; a photostatic or electronic copy of the certified page is not acceptable.
¨ Original UK-issued CNI, or original Notice of Marriage, issued by the British Embassy abroad. Please note that a CNI issued in Scotland should be presented to the British Embassy Manila within 3 months of it being issued.
¨ If widow/widower, present original death certificate of deceased spouse, or a certified copy. If spouse died in the Philippines, present
O death certificate of deceased spouse
O Advisory on Marriage (CRS Form 5) in lieu of a CENOMAR
O Marriage certificate with proper annotation declaring, if applicable, the presumptive death of spouse
¨ If divorced/annulled, present original divorce decree absolute/annulment papers, or a certified copy. If annulled in the Philippines, please present the following documents:
O Advisory of Marriage Record (CRS Form 5) in lieu of a CENOMAR
O Certificate of Finality and full court documents, including decision
O Marriage certificate, with proper annotation declaring the marriage null and void
¨ If you have previously obtained a local CNI from the British Embassy Manila or Honorary Consulate Cebu, you must then obtain an Advisory of Marriage (CRS Form 5) from the NSO in lieu of a CENOMAR.


At no point was my CEMOMAR used, but we took it everywhere we went in case it was needed