CJG #7: Tyne/C-130: this is my recollection. First mooted late-1959, but Argosy then preferred (all to do with rationalisation of industry into (to be HSAL, to be BAC)). By 1963-ish RR was parlous - they had nothing, having evidently backed the wrong V/STOL solution of deadweight liftjets: BSEL's owners (Bristol Aeroplane and HS Group) were simply waiting for such windfall assets as they might care to pick up. MoA, last minute, changed Pegasus to Medway on HS681, 9/63 (the Farnborough Show model's nacelles were shrouded on Day 1 pending decision). Then 10/64, the other lot got in, pledged to chop Defence. RR 11/64, sent in a Black Book (brochure) reviving Tyne/C-130E. PM/Sec.Def/Foreign Sec went to DC 12/64 and came away with Offers for everything, on tick, fixed price.
Roy Jenkins, MoA, as Aero sponsor, tried to retain something at home: Treasury's position was why on earth would we bother to pay upfront cash, uncapped, drift, bloat? How true. He secured Spey in F-4M despite RAF's active disinterest (I remember 170-ish with J79, same price as 118/Spey) and, incredibly, secured Spey in 40 of the 50 F-111K, again over RAF active disinterest. (This is during 1/65). No-one, inc. RR, could see how RR could meet US airframe production rates (UK F-4K/M would be a few of the 72 per month!!) So, no further distraction please by trying to put Tyne on C-130K. All Jenkins got on that was some lumps for Scottish Avn.: any more and we risked disrupting Marietta's line, at crushing penalties.