Apologies if I was a bit brash but feel this is making a mountain out of a mole hill.
Do they still need to visit the embassy to convert to local CNI? The issue is does the Filipino details need to be provided.What if the filipino party to the marriage does not possess a passport? Are the British authorities imposing a requirement that is not demanded by the Philippine authorities? It is now obligatory for a filipina to obtain a passport before she can marry a Brit?
Oh, and the problem is that many Brits travel from the UK to the provinces via Manila so that they can visit the Embassy in order to convert their CNI. This will no longer be possible if the filipinas Cenomar and passport are required.