And in 1994 he was still friends with both our nations.
I guess that depends on what you mean by "friend". He wasn't a rejected leader, ala Castro or Saddam. GB was still propping up the thinly veiled land grab of white farmers until 1997.
However, I wouldn't have been handing out a knighthood, honorary or not, to a terrorist proto-dictator with blatantly racist policies, had I been Sovereign, regardless of what my Kingdom's official stance was with his country. But, then again it took until 1940 to revoke Mussolini's KCB, so I guess Mugabe has a fair chance of dying before the Queen gets around to kicking the murderous thug out of the club. Maybe Sir Bob could use his high profile to point that out, as long as he is campaigning to end corruption in Africa.