Section 12 of the Currency and Banknotes Act 1928 states "If any person prints or stamps, or by any like means impresses, on any bank note any words, letters or figures, he shall, in respect of each offence, be liable on summary conviction to a penalty not exceeding". I propose this section of the Act be abolished.
Why does this idea matter?
This law dates back to the times when banknotes used to be written by hand, so one could attempt to make alter the figures written in the by the cashier to make the banknote appear to be of a higher value. Nowadays there is no way you could make a £10 note look like a £20 or a £50, so this offence is completely unnecessary. It simply means that people who use security pens to check banknotes, or bank tellers who write the number of notes in a pile on the top banknote, face a potential £200 fine. Fortunately the police have the common sense not to go around arresting people for this offence, but still it should be removed from the statute book.