I would definately send them by courier. It's the only way to ensure they arrive safely, as anything that goes through the Philippines postal system which appears to have come from the UK has a chance of being tampered with in the hope that there may be money or something else of value within.
May I recommend Interparcel
http://www.interparcel.com . You can book collection online and you will find that it is actually collected by DHL, but at about half the price that DHL would have charged you. You can then track the progress and delivery of your package on the DHL website. Your package will also arrive in roughly 48 hours, compared to 2 to 4 weeks, or maybe never with the postal system.
Iain.