Reverse light not working

[Hannah-lou00]

So my reverse light in my micra 53 plate is not working I’ve change the bulb any idea what it could be all the other lights work

 

[HK_K12]

Your reversing light switch has gone. It bolts into the gearbox.

 

[elsfed]

If your reverse light switch is faulty it should show the check engine light. Is the check engine on?
You could also check the fuse. This is under the headlamp (driving side for me but I don't know about the UK version) in a white box. Inside there's a list with info about the fuses.