Except on Sundays, it is lawful to kill a Scotsman in York if he is carrying a bow and arrow.

However, any Scotsman caught drunk or with a weapon can still be shot on a Sunday, except with a bow and arrow. Similarly, in Chester, it is legal to shoot a Welsh person with a crossbow, as long as it is within the city walls and is done after midnight.

This was actually on the books until 2012, when a massive “clean-up” of archaic laws dating back to the 14th century was carried out.