Jen,

I have done a little bit of a research about acceptable English Exams there in the Philippines, but the search engine always give me IELTS and TOEIC/TOEFL only. Both of them cost almost the same and as you may have known already, UK Home office suspended any ETS recognized English test TOEFL & TOEIC as approved English language qualification for immigrants in UK. So I guess that leaves you no other choice but to take the IELTS. I know that it cost a lot of money but in just one take I'm sure you'll get a score beyond what the home office requires you for the current visa you are applying. You will be alright.

Good luck anyway. God speed!