Since this PPRUNE thing is supposed to be about flying...
You might want to look at some of the deals Cathay has on flights, particularly from mainland Europe, where the prices are much lower than from London. So if you have a cheap and easy way of getting to Amsterdam, Paris or Frankfurt you can probably pick up a better deal there.
For example, out of France, Cathay has a thing called "Pass Asie", which gives you the round trip ticket to HK, plus four sectors in Asia (e.g. CDG-HKG-DPS(Bali)-HKG-BKK-HKG-CDG) for a very reasonable price (1372 Euro in economy, 4008 Euro in Business). Two of the sectors could be Dragonair into China.
For a slightly higher price (1450/4330 Euro respectively) you can include sectors to Australasia.
They don't want everyone in the UK to know about this because LHR-HKG is a "cash cow" for BA and CX, so they only talk about it on the French version of their website (
http://www.cathaypacific.com then follow the link to "Worldwide sites" then "Offres Speciales" then "Pass Asie").
And of course, for only a little more (4500 Euro in business, don't have the exact figure to hand in Economy) you can get a OneWorld Explorer 3-continets RTW ticket, which allows you 4 sectors in each of Europe, Asia and N America (plus the connecting intercontinental flights) on any OneWorld airline. This price is the same in all the European countries, but bought in London the ticket would be 3699 Pounds, which is over 5800 Euros, so you can pay for all your hotels out of the saving!