hi -saw this posted on another travel forum From the 1st October Philippines Airlines will Codeshare with Etihad Airlines from London to Manila.
the London to Abu Dhabi is with Etihad airlines. and the Abu Dhabi to Manila is with Philippines airlines.
flying time from London to Abu Dhabi is 7 hours. and Abu Dhabi to Manila is 9 hours.
and at this time Philippines airlines have the most low return fares from London to Manila at £540 Return. not sure where you can book or how many hrs stopover between flights but will update if anymore info