Yes, he was the outsider. He did do a degree in Russian at Cambridge, but as an ex-service student, probably looked down upon by the kind of public school men who became the Cambridge Five - in any case that wasn't when he was recruited by the KGB, that was after being a PoW in N Korea. It was the world of complex, muddled motives with disastrous consequences that the late John le Carre made so vividly real.
They seem to be designed for long space travels?