If the petitioner is Philippines citizen, the divorce will not be recognised in the Philippines, and the original marriage remains valid. That would be a very tricky position when returning to Philippines. On a student visa returning home is a given unless the student gets married in say UK and switches to a settlement visa. These days it takes 5 years to reach ILR settlement and a further 1 year for possible naturalisation. For foreign divorce the petitioner should be foreign to be able to regularise paperwork in the Philippines.
For the full details of your question just read the discussions on the link http://duano.com.ph/TellMeAboutPage/recognition-of-divorce-Philippines.html
Then former Filipino citizen wife, who is now a British national, can divorce the husband. Thereafter, she can have the said divorce recognized in the Philippines. This is by engaging a counsel in the Philippines to file the petition. There are two petitions to be jointly filed. The petition to correct/cancel the entries in the certificate of marriage and recognition of divorce. The correction/cancellation of entries in the certificate of marriage is necessary as the divorce decree will not be automatically annotated on the certificate of marriage as a notice to the whole world that the parties were already divorce while a petition for recognition of divorce is necessary for the said foreign judgment (divorce decree) to be enforced and recognized in the Philippines. http://duano.com.ph/TellMeAboutPage/recognition-of-divorce-Philippines.html
