problems is your g/f's passport, where was she when the baby was born in the phils, in the uk ?, and is a father mentioned on the birth cert?
it wouldn't take an Einstein to realise your g/f could not be the mother, if they looked at her passport, and realised she was never in the phils when the birth happened.thou you never know, you could get away with it
if you apply for a visa using the British immigration rules or even using a EEA family permit, if the embassy get suspicious they can ask for a DNA test, but that's only a small chance they would.
thou if i was her, i would apply for a family permit for the baby, cost nothing, less hassle than using the British immigration rules.
