Here's an interesting little bit about Spike Milligan:

One year at the British Comedy Awards, host Jonathan Ross was going along on autopilot spouting cliches as he presented Milligan with a lifetime achievement gong and read out a gushing letter from Prince Charles. Milligan, annoyed at the situation, brought the house down by saying on live TV: "Grovelling little bastard!". He later sent Charles an apology, as the two were old friends. He also cheerfully asked if he'd blown his chances of a knighthood.

Spike was eventually knighted in the 2000/2001 New Year Honours list, and although technically his foreign citizenship forbade him from using the title, everyone called him Sir Spike Milligan regardless. At the ceremony, Prince Charles tried to convince him to take the oath of loyalty and become a British subject again, pointing out even he had to do it as Prince of Wales. Spike quipped that it was different for Charles because he had to pledge allegiance to his mum as she provides him bed and board. He also informed the Prince that there were no dry cleaners in Peru.