PN: I have not seen a list of WarPac targets for a UK-solo National Retaliatory War Plan. IIRC you have yourself posted that you did not train for such a thing. K.Stoddart,Losing an Empire,Palgrave,2012,P89, comparing (it) with RAF/SAC Integrated Plan wef 1/7/58: “how (they) differed remains profoundly unclear”.
J.Baylis/K.Stoddart,Br.Nuc.Experience:Roles of Belief, Culture & Identity, OUP, 2014, P221 has a memo 5/10/62: Strategic Strike Planning by BC: “15 cities”. Any such solo sortie would be with weapons not under USAF custodianship. Yellow Sun Mk.2 was deployed from 1 July,1961, probably sufficient by 5/10/62 to address 15 targets. The period where RAF was solo-targeted was from CA Release of Blue Danube: 7/57 (Moore, Illusion, P.112) to target integration with SAC 1/7/58. RAF deployed upto 24 Blue Danube in this period.
R.Lamb: The Macmillan Years, J.Murray, 1995, P.303: Mac 7/61 learnt “doubtful our deterrent (could be used) independently (there are no) serious operational plans (to) do so”.