i have a filipina friend who wants to know what are the requirements to change her daughter's name to her father's name (filipino too)?

The child was born here in UK before the marriage 3 years ago (currently in the Phils right now) then my friend and the biological father got married almost 2 years ago i think but they haven't change the child's name yet so her current passport still in my friends maiden name. Since they got their ILR (workpermit visa holder) last month they want to get the child now back to UK. They already change her BC here in UK to her father's name.

Anybody been to this scenario before? Advice will be very much appreciated.