TEEJ said:
"The UK had nothing to do with any of the nuclear arms reduction treaties. START, SALT etc are signed between the US and Russia."
Indeed, but the WE-177 armed aircraft were assigned to NATO in the event of war. The Russians and the Americans may have negotiated and signed the treaties and I can't comment on whether or not the Russians included the other WP countries in their discussions, but I would be very surprised if SACEUR and his political masters failed to consider the UK's WE-177s or to discuss their removal from service with the British government.