Sir Richard Morris
Sir Richard (Played by actor Martin Wyldeck) and Lady Morris (played by Pat Symons) were Fawlty Towers' first genuine upper class guests, in the pilot episode A Touch of Class.
Basil announced to Sybil he would be expecting these notorious, well-respected aristocrats early in the episode, after they had seen a £40 advertisement in a respectable magazine indicating that Fawlty Towers accepted no riff-raff, this phrase obviously attracted the stuffy couple.
After Lord Melbury had been uncovered as a confidence trickster, Basil went slightly mad, and the aristocrats happened to check in at the hotel at the worse possible moment. Clearly emotionally unstable Basil almost thought that the Morris' were part of the scam. Basil confronted Lord Melbury, and the Morris' watched as the police raided the hotel, and as Basil yelled out swear words to the conman.
Clearly baffled and bewildered by what they had seen, the Morris' left the hotel, clearly stating that they had: never been to such a dreadful place, and Basil showered them with insults as their car left the driveway.