Oh the UK definitely got its reactor and stuff earlier. But that was in the 50's.Australia enquired with the UK regarding purchasing/building SSN’s, but the UK then needed the US to sign off due to the terms of their 1958 MDP that allowed the sale of an S5W reactor that went in HMS Dreadnought.
AFAIK AUKUS is a new thing. It wasn't expanding the existing arrangement the UK and US had, which again is from 60+ years ago. Uk had/has strong sovereign capabilities, Australia is weak in that, no nuclear industry, and we haven't build a sub in a quarter of a century. We are very interested about US basing and servicing US submarines, the UK isn't terribly interested in that.
AUKUS is new thing, spurred by Australia's submarine aspirations, and we went to the Americans (which we would need to even if we want British stuff). The British don't have spare submarines, or spare capacity, even their reactor capabilities are undergoing renewal, so they are even available at the moment. The British didn't need a new agreement for what they are doing and with their submarines. There reactor and supply were already negotiated before AUKUS. Future may change, and a new agreement between UK-AU-US has media potential.
Of course with such things the truth is murky.. Boris Johnson claims a lot of stuff, he claims he invented to annoy the French. The french recalled Australian and US ambassadors but not UK. I am sure the whole AUKUS thing isn't just about annoying the French.
To Boris Johnson, Brexit is vindicated by AUKUS
History is written by the victors, and in the former UK prime minister's memoir 'Unleashed', AUKUS is cast as a singular achievement of Brexit.
www.crikey.com.au
Don't want to get too bogged down in AUKUS. Its a Canadian thread. AUKUS isn't relevant.
Super interested about the Canadian submarine program.