Re: De ja Vue
"You don't make such inquiries in the City. They seemed like decent chaps. Decent chaps don't check up on decent chaps to see if they're behaving like decent chaps."
More from the same source - we would be grateful today if Jim Hacker and Sir Humpty were running the country.
"Just the one. [rule]
If you're incompetent, you have to be honest.
If you're crooked, you have to be clever.
If you're honest and make a pig's breakfast of things, chaps help you out.
- If you're crooked? - With good profits, chaps don't ask questions"
https://www.springfieldspringfield.co.uk/view_episode_scripts.php?tv-show=yes-prime-minister-1986&episode=s02e04