Airbus A380-842 MSN015, QANTAS VH-OQB, operated the Sydney – Singapore sector or QF1 Sydney – Singapore – London Heathrow this afternoon, however the onward sector to London Heathrow has been delayed overnight. This was due to minimum rest requirements for the UK based cabin crew for this sector who had been delayed into Singapore due to late running QF2 London Heathrow – Singapore services.