'Push to Exit'

There are so many things in the UK that you would never expect to be any different than the US, take doors as an example. Any security door that is locked from the outside, has these 'push to exit' buttons on the inside. In the states, you would just expect a bar halfway up the door that you would push while opening the door (requiring little, to no thought). In the UK, the problem is you have to look for these buttons (as most are not labeled like the one I have pictured above) as they come in many shapes in sizes and could easily be mistaken for light switches or doorbells. Inevitably you will not see a button or two and run into a locked door and then start looking around for the stupid button.