Prior to 2001 (excluding monarchs) who was the only female to appear on UK currency?

dai.laffin, how do you work that one out she brought cleanliness how can that be harmful maybe talk to the guys who invented the weapons and War they did the harm.

Piotr, I'll check that out. She didn't invent the pie chart, but she adapted it to make it more readable. Instead of making the "wedges" wider, she made them longer.

I think she invented the pie chart 📊