So waht threat do you expect will come to NATO?
Malayan emergency was mainly a low level war with mostly special forces and para-military police action, of course there were army and airforce involved, otherwise it is not a war, it was a threat only to colonial interest of the British Empire, not to UK itself.
Wars is Iraq was a BIG mistake, not a threat to NATO. Blair was obliged to Bush's mislead action, not as a result of military threat to UK.
War in Korea was not a threat to NATO, what has UK had to do with obscure Korea of 1950s in terms of militaary threat?
With UK's economy in such a sorry state, and the current austerity economic policy , and heavily debt ridden, why spend money on something unproductive?