alternatehistory.com

During the negotiations for a Western Europe wide Free Trade Area between the six common market members and the seven who eventually formered EFTA, Harold Macmillian threatened de Gaulle that Britain might pull its troops off the continent and leave NATO.

What if he goes through with this "fortress Britain" approach, what would happen to the British economy, how would the UK armed forces develop without the NATO commitment? Would they have a much more expeditionary focus and retain conventional aircraft carriers? How would the Labour Party respond, given that they were the more Euroskeptic party at the time?
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