Well had a quick go at reparing it tonight. Will do it again properly at the weekend but wanted to see if it worked in principle.
BEFORE:
Pic doesnt really do the scratches justice. They are quite deep.
Sanded back the laquer with P1500 wet and dry, coloured the scratches in with Black permenant marker (a bit crap i know but actaully looks quite good), smoothed and re-laquered.
AFTER:
Quite pleased with the results but will do it again over the weekend to neaten things up as this was done in about 20 mins.