Engine still runs after key is switched off

[Lotriet Mini]

Mini Clubman 1275E
After I have started my Mini I can't get it switch off. I can switch the key off and remove the key but motor still keeps on running until I remove the top fuse of my fuse box. 

Any Idea what the problem might be.

[Grimz]

Hi It could be a faulty ignition switch.Mine used to do that as well. after changing the switch it was fine.

[Lotriet Mini]

Hi It could be a faulty ignition switch.Mine used to do that as well. after changing the switch it was fine.

Ok I will look in to getting a new ignition switch although this one is a few month old.

I also measures at the fuse 1 - 2 with the miltimeter and there is constantly 12v with the ignition switch off. If I am correct it should be 0v with ignition switch off?
?

[Grimz]

Hi It could be a faulty ignition switch.Mine used to do that as well. after changing the switch it was fine.

Ok I will look in to getting a new ignition switch although this one is a few month old.

I also measures at the fuse 1 - 2 with the miltimeter and there is constantly 12v with the ignition switch off. If I am correct it should be 0v with ignition switch off?
?

yes that's correct, maybe check if the wiring on the switch is correct if it is just a few months old.

Should be connected as per below.
   

[GTSPhil]

What is your ignition timing set to?