Switched 12V Power in the Boot

Can anyone tell me the best place to tap into for switched 12V power in the boot? This is a 2011 Fabia Estate, I had thought of using the cigarette lighter but I believe they are constant power. I thought about picking up a toggle switch and replacing the cigarette lighter in the boot, but it will always have power to it regardless of the switch position, although if I can at least turn off what I want to power with the toggle switch then the battery should still be fine (I think).  I also can't figure out how to get at the back of the cigarette lighter in the boot anyway.

Ideally I want something that will switch on and off with the ignition, but not sure what options are back there. 

Thanks.