Originally Posted by Swanhunter
Wouldn't SIN-SYD be at the end of the trip i.e. after the LHR-SIN sector? On the BA flights this means two overnights.
Correct (my mistake)! Mind was reading SYD-SIN.
Although the OP could be on QF 32 which is a day flight so my comments would still stand and would be best to stay awake on this flight.
Also the OP has not suggested that they are coming into SIN from LHR. Answering this question could help us better answer their original question. They may simply be doing a SIN-SYD trip standalone.