1961 a Vulcan from 617 Sqdn captained by Sqn. Ldr Beavis.
Scampton - Sydney none-stop. 20 hours 3 minutes.
214 Sqdn placed Valian BK1's in Cyprus, Karachi and Singapore to refuel the Vulcan.
As for a more exact date, I'd have to look up my old passports.
I was with the Karachi detachment.