We flew with BA in April. 2 BA flights take off for Sydney within 10 mins of each other, but one goes via Singapore and one via Bangkok. We were on the Bangkok flight. Due to a minor technical problem we were an hour late leaving Heathrow (11pm), so when we arrived at Bangkok (4.30pm local) we were told that they would try and catch up the time during the turnround (which should have been 3 hrs). We had the choice to get off or stay on the plane. We chose to stay on, which was really interesting. We saw the team come on and 'clean' the cabin, put out new pillows etc. We even had a trip to Club World and First to see what you got for your money! Even tried a Club World lay flat seat. Anyway, took off after about 2hrs 15mins and landed Sydney 6.15am (15 mins late after a one hour initial delay). You will then walk through Sydney airport like a zombie and take a couple or three days to get your body clock right. But go, its a great place!