I've got a NCL-DUB-LHR-SYD-SIN-SYD-LHR-DUB in December/Jan that I got for £1k in WT+. Thought it was a pretty good deal as the price from NCL was around 3.5k! I can fly NCL-DUB with EI the morning of my LHR-DUB connection with a 3 hour window, but have not yet decided whether or not this is the safest option in case of disruption.