Shouldnt the judge will be looking for those documents before he/she wed the couple? Local CNI can only be applied by the applicant itself and no one else. But he can get it on his own, no need to bring the fiancee. get all the necessary paperworks and re marry again and make sure it gets registered at the NSO.
Its always best to get things sorted and in proper way to avoid waste of money and effort.
If hes got a dual citizenship, he can get his wife either on those nationalities. his wife can apply for spouse visas if he uses the british citizenship or she can apply for dependant visa if he uses the Filipino citizenship. As long as they met all the requirements.
to be honest applying for dependant visa is as almost the same as spouse visa in providing the documents.
