Political cartooning that makes a point and makes you laugh isn't particularly easy to find. But Steve Bell of The Guardian is an exception. His cartoons make you just want to wash your hands if you ever had the misfortune to shake hands with politicians. (I had to, one time, with John Banks, Mayor of Auckland, I still have bad dreams)
Here's a particularly good one, if you remember Mrs Thatcher as PM (as opposed to icon for the Cold War outcome).
And here's one that got the Duchess of Dupont all upset.