We are in Oz

Lon - Sin
It didn't quite go to plan. Delayed take off and our approach into Sin was altered meaning we only had 40 mins in Sin airport. As it was our first time at that airport we weren't confident enough to head to the lounge maybe we will get a chance on the return leg.
I slept for 3 hours which was plenty enough.

Sin - Syd
We managed 4 hours sleep, would have had more but the dinner service was very slow and went on for hours.
We landed dead on 5 am, took our time collecting our luggage before heading to the taxi rank. We arrived at the IHG by 6.30 am and were able to check into our room
We were shattered and had to sleep, albeit only a few hours. There is no way we could have stayed awake.

I don't think we have suffered with jet lag too much. The earliest we have woken is 7am and this morning was 9 am. I am feeling quite tired especially late afternoon as our days are so busy.

Thanks for all your help.