Kevin, I can confirm what jonnijon has said.
She can file and secure a divorce here in UK. But that divorce will NEVER be valid or acceptable in the Philippines. In fact I will dare to inform that she would be considered a bigamist in the Philippines.
Just as an example please look here:-
http://gtalawphil.com/wordpress/?p=81
In all honesty I cannot personally advise you to go ahead. Especially if your G/F will ever go back to Pinas.
You never know who will report you or why.
Annulment can be very difficult and does cost lots money.
If you do decide on the Annulment road, think carefully about the grounds and what would be involved. Or if you want to share some details here, there are experienced people who can guide you. Maybe there is a better way.
