Declaring cash when entering or leaving the UK

If you are arriving in the UK from a country outside the European Union (EU), or you're leaving the UK to travel directly to a country outside the EU, you must declare any cash of 10,000 euros or more (or its equivalent in other currencies) to customs officers.

I don;t know about others, but the chances of me carrying in excess of 10,000 Euros on my person is a billion to one....what sort of holidays do you think I have