The fuse and relay have both been replaced which unfortunately didn't solve the problem.

I went out to look at removing the fogs but the screws are rotten.

I've got a few other things to be doing with the car first, one of is replacing the front bumper.

When this is done I'll look more into it.

It was just on the off chance I had missed a hidden fuse box somewhere that may have sorted it.

Thanks for the help anyway, hopefully it's just the bulbs needing replaced!