With regard to the two strands of this thread, I'm a little dis appointed that XS 709 is a contender as, between the 7th and 25th of November 1966, I flew in XS 712 (twice) XS 713 (twice) and XS 714. Captains were: Sqn Ldr Yeardley, Flt Lt Burdett and M/P Bird.
I seem to remember that in 1980/81 there was a crew on 27 Vulcan MRR Sqn, of whom four were over 60 or pretty close to it; the co-pilot was a youthful 51. It was said that when they arrived at Hickham on a ranger they enjoyed themselves by spending their time off drinking endless g + ts in bed.