Was quoted 200 quid to replace both fork seals.
So I made a seal cleaner out of a plastic milk box.
There didn't seem to be much dirt in there but gave it a couple of turns with the plastic tool, put the dust cap back on and its now as dry as a bone. No leak. Seems to be cured for now anyway !
Just wondering if the small amount of oil that was lost from left fork, through the leak would matter as now the forks have different oil levels?
Now on to the next job which is to replace the rear brake pads.