Best scratch removal stuff.
 

Can anyone recommend some good paintwork treatment stuff to remove fine scratches?

Given that these things contain a slight abrasive - do spots that you've used a touch up brush on get better too?

Try Meguiars Scratch X, its a diminishing abrasive.

http://www.meguiars.co.uk/

Helped take a few scratches out of my car without causing more damage.