How to get into a locked Nissan Micra 2003?

Posted: 19 Jan 2014 05:10 AM PST

I own a Nissan Micra 2003. I opened the drivers side door and put my bag, car keys, and phone inside and popped the bonnet so I could top my car up with oil. When I tried to get back inside about 5 minutes later it was locked. It does not usually automatically lock. I only have one set of keys and it is a fob lock. So phoning a lock smith is no good. Any tips on how I can get back in???