I was standing in the middle of Oxford Street on Saturday, having bought some blinds for my new room, and couldn't for the life of me think where I could possibly buy a screwdriver.

I tried Blacks, John Lewis, and one of those weird cobblers/key maker kiosks and none of these places either sold, or could even suggest anywhere, that sold screwdrivers. This would never be a problem in a small village.

I'm wondering if I could make a quick buck laying out a blanket and selling them on the street. Plus, if kids started switching to my screwdrivers - on a technical level at least - we could see a drop in knife crime figures