The British Commonwealth Forces Korea ... the lead force was the British Army. Personnel also drawn from Canada, New Zealand, India and Australia

I continue to encourage my elderly rellies to join RChat ... but they continue to decline.
ADD, I know that to be eligible to be on the electoral roll in the 1950s you needed to be aged 21 and over, residing at an address, and a British Subject, either born one or by naturalisation.
JM