Old site canteen cabin lost key!

[Nickynoo51]

Hi, I have an old ex site canteen cabin in my garden. Have been using it as a den for 7 years and it holds all my vinyls, most CDs, guitars and treasured old leather sofa. It has a side door with standard slide bolt and lock system and two steel shuttered windows. Problem???!!! Had 2 keys, lost one ages ago, now lost only one left. The building firm I bought it from don't have any spares. So, without trashing the window shutters and rendering the cabin not secure, how do I get in? Help!!

[Squelchtone]

I have no idea what a canteen cabin is or what a standard slide bolt lock system looks like so could you post a photo of this building, one of the door, and a close up of the keyhole? Upload the pics to imgur.com or photobucket.com or whetever you host your photos online and Copy/Paste the links here so we may see what sort of lock you have.

Thank you
Squelchtone