For anybody that had/has the same problem as me, here is what fixed it.
Short on the BSI board. This had shorted due to a number plate l.e.d malfunction.
There are no fuses for these lights that are changeable so a wire was soldered on and modification done to the BSI so that a fuse can be changed just like the rest on the BSI and a relay added too.
Lights all working again
I didn't do this fix myself, took the van to a well known mechanic in the area (best known for being able to use diagnostic equipment properly). I didn't tell him I cleaned earths and tried all sorts, he had the problem found and fixed within a few hours.