Since I am coming at this from a vastly different departure and one earlier in time, a cold peace Great War, I can only add a tangential alternative, but bear with me. Post-Great War the leadership and financial heads all could not see a world without gold, but the biggest hurdle was that the USA held vastly more gold than did the other economic powers and the European economy as badly unbalanced but the attempt at sinking the German economy and fragmenting that of A-H. The USA had to go on an import binge and settle in gold to return enough parity that the gold standard could return to functional, otherwise we get the Dollar as king currency when the USA sterilizes the gold, simply keeping gold a myth as exchange. Into this stood the Sterling zone, letting that collapse may have done more to subjugate the British to the USA than anything else. I have no convincing way to truly head off the economic doldrums that I think were structurally embedded post-war or keep Britain and the City from diving into gold, that toxic love affair seems destined to cripple the British economy alongside that of the USA through the 1930s. However, in my own ATL the Depression is not as severe or as global gold flows are slightly better, the British begin to lean back on Sterling as the alternative to gold (which both France and the USA proved was too sticky to rely upon as a medium of exchange), and there is focus on inter Empire trade in the face of a trade barrier paradigm. Although I am trending away from anything as destructive as WW2 I think there are still PODs that later to steer the British at the Sterling zone. The hurdle is that the USA post-wW2 possessed so much gold that it could impose the gold standard and thereby make the Dollar as good as gold. I have no good answers for breaking that monopoly.
But in tinkering with the end of war and the fate of the Ottomans I can still see the British getting a stake in the middle eastern oil, first Iraqi fields and later the gulf oil. For me it puts the British on a track more akin to the USA, Sterling is a serious trading currency, n oil trading currency, a medium of exchange and leveraging financial activity back into the City. With Sterling stronger the Commonwealth remains more coherent and there is some skim to get wealth back to the UK. The USA oil majors still want in and have the strong Dollar to back them, the USA has the wealth to develop oil on the scale we saw, perhaps in an ATL like mine oil is retarded as not just the investments are less but the political division is deeper, competing national (i.e. great power) interests slow the pace as we saw occur over the Iraqi oil and the German railway to tap it. What is needed here is a more visionary set that sees India as no longer the center piece of the Empire but instead the Arabian Gulf and redirect East of Suez to "West of India." That is what I am toying with, a bigger British footprint in the middle east, a drawback from the far east to there, some abandonment in Africa and elsewhere, but a British double down on retaining its position in the emerging global oil race. For this discussion it might take a retrenching USA post-war to lean more on the British to secure the middle east, that seemed to be the American position, so there might lie some fertile ground to break the British free.
As an aside, does anyone have a good inventory of BOAC and BEA aircraft fleets roughly 1950s to 1960s? Bonus if someone has an idea how Imperial might have grown without the war and how may flying boats it likely needed. I am trying to get an idea of how large the domestic market might be to keep the British aircraft makers in the race. Thank you in advance.