From what i can remember, (and this is going back almost 2 years)
To the Philippines officials, the paperwork that you get from here doesn't count for squat. You'll still need to spend 5000 peso (approx) in the British Embassy to get it converted to a Filipino one!
Grrr .. it's a very frustrating thing.
Just budget generously for it ... that way you won't deplete all your funds and find yourself in a tight situation!
James "The Advisor" Hubbard