if you've been in the uk one year or more, you cannot drive on a international license .
also you must tell your insurance company your driving using a international license.
if the police stop you and your driving with a phils license, then your driving without a valid license, so your insurance will be invalid, and if your taken to court and convicted, then it could effect your app for naturalization, meaning you might have to wait a further 5yrs until the conviction is spent.