Didn't the Stern Gang include many of Israel's future bigwigs? I'd say a few MI6 hitmen we be roving Tel Aviv in 1945.
I think some of the biggest butterflies will be back in Britain. The Atomic Bomb project as mentioned for one, but if Cripps goes to the Foreign Office god knows how Britain's response to Soviets will change. One good however is butterflies will certainly save Hugh Dalton's career as Chancellor and he wont implement even harsher rationing as Cripps did (he was something of a bureaucratic sadist) which will give Labour a better chance in the 1950 elections, again butterflying away the Westminster system cock-up of 1951. After that I dare say the 1950s may be a Labour decade, much of Eden and SuperMac's support came from economic improvements built on Labour's post-war groundwork, and with Gaitskell at the Exchequer instead of Butler there wont be a great deal of change, save a few private building firms losing out to councils for house construction.
What will happen with Suez is intriguing in such a climate. Post-War Labour, partly due to the more obvious Welfare programmes and future pacifist trends in the Party seem to be forgotten as very pro-military, with the right of the party all for Imperial Retrenchment (Attlee had quite a few military bases built in Kenya in the late 40s, and Im assuming he intended British troops to be staying). At the same time Bevin was central to this current of thought, his fight for the atomic bomb the obvious example.
Then you have Europe. Labour believed in a large, conventional European military force as the prime bulwark to the Soviet