Sun visor courtesy light

I have a 59 plate CC and have been lucky enough to have had only one problem with the car in all that time, the driver door bolts were coming loose and since they've been retightened they have been fine.

I now have another problem, albeit very minor and it's more of a niggle really. The courtesy light above the drivers side sun visor has stopped working, it seems to be a connection problem of some sort as the bulb is fine.

Has anyone else had this problem and managed to fix it? If so is it easy to do?

Tony