Done it many times when I worked in Hong Kong and my family were at our house in the Phils.

As a Brit, you'll be given 6 months visa-free in Hong Kong.

Any time you enter the Phils, you just need to show a ticket OUT to ANYWHERE. Doesn't have to be your home country.

Cheap flights easily obtainable between the two countries, and only takes a couple of hours on the plane.