requirements for the renewal of passport is on this link..

http://philembassy-uk.org/consular-matters/passport

it says there that: If marriage was performed outside the United Kingdom, please submit the original and four (4) photocopies of the marriage certificate which is duly authenticated by the Embassy in the United Kingdom of the country where marriage was celebrated.

to be sure, give them a ring.. here's their contact number..

http://philembassy-uk.org/contact