Tankers had to be sent south to refuel these Victors so they could reach Ascension. A total of 11 Victors were used to support Black Buck One: XH669, XH672, XL162, XL163, XL188, XL189, XL192, XL232, XL511, XL513 and XM717.[15]

https://military-history.fandom.com/wiki/Operation_Black_Buck