Imfree
Get an annotation letter from your regional NSO office, just to say QC have been informed of the change, keep it with your Birth Certificate, then present your application, just be aware, your Filipino spouse to be cannot pass you British nationality if he acquired it through a work permit and indefinate leave to remain, you would have to qualify for British nationality under your own situation, howeve there is nothing preventing you from coming to UK as a fiancee, nor is there anything preventing you from obtaining indefinate leave to remain once you have met the rules.
Best of luck.
