To enter leave your email address and/or blog/website with your answers in the comments below. Please leave all your answers in one entry and you can only enter once! You have until 23.59 GMT, Sunday 16th July to make your guesses.
The people with the most points will go into Neil's paperclip selection.
And the prize for the lucky selectee - it has to be a copy of "What's in a Name?" - a fab little book which give the origins of the name to every London Underground Station. which explains the origins of every London Underground Tube & DLR station name. It's also got other information including the year the station opened, and the name changes that have since occurred. Plus black and white photos of many of the stations or their immediate surroundings.