Right so after all the problems it seems to be finally sorted now.
Car had a Service at VW and Coil pack swap which I knew would sort the Misfire but also the car felt a lot better.
However it still had the EML light on which VW noted on the free health check but did not do any further diagnostics.
Got home and first went to Engine code, there were 3 faults from before, cleared them and EML went straight off. Re-scanned the car and no faults. Been driving the car for a day and no EML on still.
So think the N205 Valve will need to be replaced eventually but the damage to it is more cosmetic on the connection hopefully.
The Health Check did find my CV boot which I was looking to replace myself is now fully split and the wheel bearings on one of the wheels is noisy and need fixing so a few more repairs