Marriage and visa inquiry

Under international laws, the portuguese consulate in the UK should be able to celebrate your wedding as well as the portugueses locals authorities.
Before coming, prepare all the papers that will be necessary for the wedding (your fiancé can find the information at the portuguese consulate).
In Portugal, you can get married also in a church provided that the priest is authorized to celebrate by law, so your fiancé can as well contact the priest for his family.
good luck !
Melanie

Hi, I'm a Filipina and married to a Portuguese. As to your question/s:
1. Yes. You can get married in Portugal in the duration of your vacation provided you have all the necessary papers. Mine took a month to process.
2. Get a CENOMAR from the NSO in the Philippines and birth certificate.
3. All documents from the Philippines should be authenticated (by DFA) and officially translated to Portuguese.
4. You need to have the embassy of Philippines n Lisbon post your marriage banns. So the authenticated documents should again be authenticated by the embassy (redundant, I know)
I'm not very sure about the documents your fiancée needs to provide as it was my husband who worked on it. But as far as I can remember I only needed 2 documents from my end--CENOMAR and birth certificate.

Good luck!