Earlier quoted context omitted.
The answer is in the article: > The machines can be programmed to find cash, but they aren’t because they are operated by airport-security agents, responsible for passenger safety, not customs and immigration officials. As to why the UK government doesn't pass a regulation that airport security is also responsible for detecting large amounts of cash, I have no idea.
> As to why the UK government doesn't pass a regulation that airport security is also responsible for detecting large amounts of cash, I have no idea. Shouldn't law abiding citizens have the right to possess and carry cash?
If you're a law abiding citizen, why wouldn't you declare it? If you don't, well congrats, you're no longer a law abiding citizen.