Who can remember when it was possible to be paying 21shillings in the pound tax?
In the late 60,s early 70,s there was a 15% unearned income tax and if you were paying top rate tax which I believe was 18 shillings and 6d in the pound and a large amount of it was investment income you could very well be paying 21 shillings on your top slice.
I actually only met one person paying that rate and he was not happy.
The investment income surcharge was a labour invention as punishment to the rich for being successful.At that time we were losing talented people to other counties (the brain drain).
Also does anyone remember when fork lift trucks were first introduced to the docks and the dockers insisted that they still had 4 man teams which meant than one driver and 3 assistants with nothing to do.