After the coins come your higher denominations - the bank notes. We start with the smallest note, the five pound note (so in UK strip clubs the dancers do quite well if someone tucks their smallest bill in your thong). Then we have the ten, the twenty and the fifty pound notes. Loving our variety each of these have different colours. Starting at the beginning we have the green fiver, the orange tenner, the purple twenty pound note and the red fifty.
The current Dollar to Pound exchange rate is about 11/2 dollars to the pound which is why I like holidaying in America because I get more for my buck. :)