Just been speaking to an Aussie.
He goes to the Phils regularly and pays the equivalent of 34,000 PHP in AUS dollars for a return journey which is well over £500 if I'm not mistaken. This kind of price is from both Sydney & Melbourne with the cheapest airline.
Distances
London to Manila approx 6600 miles
Sydney to Manila approx 3800 miles
After doing the maths I'm baffled.