Looking for flights and came across these in April. I've done this route a lot and these are the cheapest I've seen with a decent airline and decent flight times / duration. No messing around , 1 stop quick changeover. Also, the Dubai-Sydney portion is on the brand new A380's, which have more legroom in economy than most aircraft.
Link to London-Syd http://www.kayak.co.uk/flights/LON,nearby-SYD/2015-04-09-flexible/2015-05-10-flexible
Other dates may be cheaper but all around the same price
*Note* Booking says Qantas, but flights operated by Emirates.
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