Well Australia has been buying almost every key US aircraft system so far such as Super Hornet, Growler, Lightning II, Triton and other US-developed systems like Wedgetail, MC-55A Peregrine and the Boeing Australia loyal wingman project. So buying the B-21 wouldn't be a stretch security-wise, but fiscally it might be too ambitious.
Interesting if Britain is in the fray too, the B-21 would seem rather ambitious as a Tornado replacement and I doubt the MoD would get funds for more than half-a-dozen.
TBH highly unlikely ...more chance of UK purchasing the airworthy F-117A. Anyhow UK has been out of the strategic bomber mission since the early 80s. Doubt very much we could get back int hat game. Yes I know Tornado crews Been on exchange with 509th Flying the B-2A for near decade..
plus the USA haven’t exported likes of B-52, B-1 or B-2 so why would they want to export high tech state of the art stealth bomber? Even if it’s us their closest allies.
Say in theory , MoD purchased B-21....where could we base them? let’s look at former V Force bases .Only so many bases can handle strategic bombers...one is RAF Marham as they had Buffs deploy in 70s to early 80s.
Waddington is busy and has no space due ISTAR assets such as E-3D (and soon to be E-7A Wedgetail), then throw in the mix of R1 Shadow and Sentinel, RC-135 Rivet Joint.
Wyton..forget it....runway long gone, and main base is a spook base ...JARiC etc.
Wittering forget it... got UAS and flying training squadrons equipped with Grob Tutors.
Bsocombe Down has nice long runway, and plenty of space apart from QinetiQ Wmpire Test Pilots School and other test squadrons. Probably the odd black project,
Scampton ..home of the Red Arrows And on the closure list. Tbh the base is run down as I saw it two years ago during the one and only airshow held there.
cheers