One of my favorite le Carre tidbits - apparently in the UK and US versions of “Tinker, Tailor,” a character in one version takes a ferry in Hong Kong, but takes a tunnel in another version.
Apparently after the original UK release, one of the readers asked le Carre why the character didn’t just take the (relatively recently opened) tunnel between Kowloon and the mainland, le Carre went white in the face and promptly rewrote that part in the forthcoming US version for its subsequent release and had the character take the tunnel instead (as anyone would have done in those circumstances, given the two options).
Terrific writer and storyteller. Must have had a hell of a life.