Hi guys,
Thanks for the pointers. I have checked the tighteness the neck screws and straightened the neck using the truss rod (I think I put it out playing around before I had any idea, as opposed to a little idea now). With the bridge saddles at minimum the strings do not touch the frets, so according to Gav's advice a shim might be worthwhile.
I haven't leveled the frets yet, I'll keep that as an option, but to my eye the frets look fairly even.
The saddles are just above the minimum and (I think) the guitar plays ok. However, the action is still a bit higher at the bridge end. As I haven't much electric experience, what is a good level of action to aim for?
If photos will help, what angles do you want?