We go to OZ twice a year, either JAL via Tokyo (or Osaka) or SQ via Singapore. Choose the flights so it is a morning/Midday departure from LHR. This arrives in TYO/SIN am the next day (Midnight UK time). Stay at airport hotel in Japan or airside transit hotel in SIN for 8-10 hours to sleep and then take evening local time flight to OZ. This is daytime uk time. Both these routes avoid jet lag until you get there. On the way back either morning flight up to Japan, 12 hours rest(included in ticket price in this direction with JAL) followed by day flight to uk. Or afternoon flight to SIN about 9 hours rest followed by day flight to uk. Again avoids jetlag during journey. Trailfinders (see weekend press) will get you the flights but they tend to allow min turnrounds in SIN/TYO so insist on longer stop overs as above.(Get flight times and flight numbers from the respective airline's websites) Book Sin transit hotel in advance via e-mail(see Changi airport website). No problem at TYO/Osaka, plenty of airport hotels (twin room £40pn). Avoid 2 weeks either side of christmas on both routes if poss. Similar route home available from Auckland. I've been going to OZ regularly for the last 30 years and there is no substitute for breaking the journey for 8-12 hours.