greetings phil,,, if you have a british passport you can extend for 2months and then every 2 months after this for 16months, after that you have to write a letter explaining that you wanna extend and they wll extend for a further 6months.....but...if you go to the philippine immingration the day you arrive in the philippines they will give you a one year free pass....not sure of the payment but i don think its much better that payin out for all those visa extensions!!!!
unlike me....when i went to extendd i found out this little piece of info about the one year stay....and was disappointed!!! because i benn here now for 16months and have had to extend every 2months! around 3000 pesos a time