Rear fog lights not working

I have tried googling a little for similar problems but i'm just trying to clear things up here



The other day my rear fogs seemed to be working fine as i was doing mot checks before putting the car in for an mot.



When i got the car back it turns out that it failed on the rear fog lights and fog light tell tale not working...



I have checked the bulbs, theyre fine, fuse seems fine, replaced the button with a known working button and still nothing.



So does that mean the fault is in the BCU unit? I can't pass the mot without a working set of rear fogs :/



Car is a 53 (04 registered) ZR MK1, has the later type fobs.

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