I've just read through all of this and damn this is superb! Excellent stuff!
Thank you.
Can't see China doing as well ITTL as OTL.
India will be too far ahead, with a solid base in the Commonwealth.
Indeed so. China didn't really get going with its economic development until the 1980s, and India is starting that process long before they did IOTL - they didn't start dismantling the License Raj until 1991 IOTL, whereas here they began doing it in the late 1960s, and not having economic sanctions against them as IOTL (a result of their 1974 nuclear test) helps matters, that made possible by their decision to build a major naval fleet in the 1950s and 1960s that is seen as being a source of both power and pride for India - India as of 1972 operates two aircraft carriers (INS
Viraat and INS
Vikrant, the former HMS
Eagle and HMS
Ark Royal), two battleships (INS
Shivaji and INS
Shikra, the former HMS
Howe and
Anson) and a quite large fleet of smaller warships of various origins, though the last of the WWII destroyers will leave Indian service in the early 1970s, supported by a big naval air fleet both on the carriers and off of them, again of various origins. India here industrializes in a more trade-driven way than China did, starting off by exporting many materials in large amounts and in the process growing the national wealth, which is subsequently used to massively improve the country's infrastructure. The Commonwealth is a big help on both fronts, and the white dominions see India being developed as a potentially vast benefit to them, as having one of the world's largest countries be a good ally with you is a big help. Here, India isn't a big fan of the USSR even though they are much closer to them than most of the Commonwealth, but the United States' long-standing support of Pakistan pisses the Indians off to no end, even though the Commonwealth by the early 1970s is not big fans of Pakistan's persistent political instability and creeping Islamism. The turn towards that Islamism of Pakistan in the 1970s and India evolving after Indira Gandhi will shift the balance of power in that part of the world decisively in India's favor.
China will be recognized by the United States in 1972 as IOTL, but China's lingering distaste with Britain over Hong Kong (which China wants back, has since the Korean War) and the Commonwealth's disdain for communism means the two Chinas - the PRC on the mainland and the ROC on Taiwan - will be at loggerheads for a long, long time to come, and Tiananmen Square will make things worse as far as relations between the Commonwealth and the People's Republic of China.
If Britain's African colonies also join the Commonwealth and get the assistance they need coupled with a healthy injection of Welfare Capitalism, it's exploitation of African resources to feed it's Industries won't be going anywhere. This is of course before taking into account a much stronger and wealthier Korea and Australia in the region.
Sorta true. Africa will be divided into nations that choose to completely toss out the colonial influence (the Congo and the Portuguese colonies) and those who seek help from the Commonwealth and the West. Rhodesia will be a pain in the ass to the Commonwealth in the 1970s, but there will be a happier ending in Rhodesia, Namibia and South Africa than OTL. Kenya, Tanzania (Nyerere never goes full moron here, passing on the Arusha Declaration and instead focusing on economic growth in the 1960s and 1970s, which leaves Tanzania way ahead of OTL) and Madagascar all do much better than OTL. Uganda spends an age picking up the pace after Idi Amin, but they do eventually get closer to the others. Several other nations in West Africa (particularly Ghana, Senegal and Ivory Coast) also do far better than OTL, and in the case of the Ivory Coast and Senegal become symbols of what the French seek to achieve in their former colonies. Africa is very much divided by wealth, but the 1980s sees the beginning on a long boom in the continent, which gets much more pronounced after the end of apartheid and when the world's changing geopolitics.
I really want to know the Commonwealth's Energy situation. How much do they deal with Alt-OPEC? With Canada and Australia being energy exporters, and Nigeria, South Africa, Sudan all having Coal/Oil deposits.
Canada was invited to be a member of OPEC with its founding in 1960 but chose not to join, instead choosing to decide their own production. Australia isn't an energy exporter to speak of, though they do export bloody near everything else - bauxite, iron ore, nickel, gold, diamonds, liquefied natural gas, uranium, coal, rare earth metals - as well as vast amounts of wool and foodstuffs of all kinds, which contributes to them having similarly-huge piles of investment cash. (This when combined with tight control of monetary policy has resulted in the Australian dollar being one of the world's most high-value currencies, which is a major help to the country's standard of living, which is correspondingly high.

) Nigeria is an OPEC member but will have a better fate starting particularly in the 1980s, and while Nigeria was suspended from the Commonwealth as a result of the Biafran War, that will change in the late 1970s.
I assume either BOAC had different Executives, or the British Government forced them to stop interfering with British Companies, since alot of the problems with British commercial aviation was because of boneheaded requests from BOAC.
This, in a nutshell. BOAC was run by morons for much of its existence IOTL, but here the Vickers VC-7 beat the Boeing 707 to the punch and became BOAC's workhorse, and its success makes sure the VC-10 (which is more refined than the VC-7 as well as having longer legs) is also beloved by BOAC. The Canadair Metroliner and Hawker Siddeley Trident (the latter not troubled as a result of BOAC's stupidity and as a result debuts two years before the nearly-identical in design Boeing 727, with the predictable sales result) also make an impact, this reducing the Bristol Britannia to an aviation afterthought (though the Britannia was beloved by those who flew it, it was passe in the era of jets and the Dash 7 combined with the Metroliner, VC-10 and Trident all but eliminated it from airline services by the early 1970s) and making turboprops an endangered species until the Dash 7 and the Dash 8 that followed it showed it was possible to use turboprops for a purpose.