Continuing with Wednesday 20, QF1 (1515 hours MEL-PER-LHR) was airborne with B789 VH-ZNI so at gate PER arrival is on the cards for 36 late at 1751 hours. On time arrival in LHR remains possible.
FR24 claims the 1755 hours QF5 from SYD to PER and on to Rome (FCO) has been cancelled, but QF's flight status website page suggests it's merely been delayed out of SYD by an expected 55 minutes. I assume the latter is correct. Not sure why FR24 features incorrect information at times: the feed has to come from somewhere (mind you, things change).