Hi Bon,
Please click on this link to the UKBA webpage called English language requirement
Also here is the link to the UKBA approved listing of English Tests
You'll notice that there's quite a selection of different English tests available to you.
You are by no means limited to the IELTS test
The UKBA site states that:-
"In the test, you will need to demonstrate a basic command of English (speaking and listening) at level A1 of the Common European Framework of Reference.
Someone assessed at level A1 can understand and use simple, everyday expressions and very basic phrases.
You will not need to demonstrate reading, writing or grammar skills.
Plenty of forum members have taken a TOEIC test which is done by Hopkins.
Many members have also taken IELTS
Do be aware that IELTS is a slightly higher level (B1) so if you're not confident with your English that might be quite a stretch.
Solely for meeting the UKBA requirement for your visa application you do not need to undertake any special training.
Many of the test centres can certainly accommodate review classes for those whose self-confidence needs a little boost.
Bon, take a look at the right hand column called 'Contact Details'. Here you'll see websites and/or details of test centres.
Many folks try to find one that's close to where they live rather than making special travel to Manila.
Anyway, please take some time to review the links and don't be shy to ask any questions.
Plenty of friendly folks here will share their own experiences with you to ensure you get the needed papers.