Just an afterthought there Paul, staying together for financial reasons is a disaster, if you are not living together as man and wife, for one thing, you will never be able to bring your Filipina babe to the UK as you will need adequate and suitable accomodation for her, the ECO's in Manila will not grant a visa for her, if you have nowhere to live, if you are dependant on your current wife for accomodation or are living to keep costs down, I cant see how you will achieve your quest to be with your girl.
Just a thought, hope it works out