Hempy, true to a point except for the matter of air supremacy in the west. Of course once they reached the North Sea we get to a further what if.
They would have expedited the Bull programme but would they have got the bomb secrets from the atom spies? How soon could they reverse engineer jet engines. Would they have got their share of German scientists and technology?
Then in 1947 they developed the AK47 while we were stuck with the SMLE and presumably would not have got the Belgian FN.
The Canberra would have outperformed anything but would our aircraft industry have progressed that far in wartime
We would really have been in hock to the US for B50s, P2s, P51s etc.
Hopefully the Mig 15 would have been much later.