Got a wheel alignment done yesterday.
This is what it was set to.

I have since removed a 0.5mm shim from the trailing arm bracket on the right rear and slotted the spindle hole up a mm. This should have increased toe in on this wheel my 1mm and added 1/2 deg negative camber.
I added a 0.5mm shim to the left rear to reduce the toe in by 1mm so I should have the same 2.2mm total toe in but the tracking should now be straight ahead.
The car drive nicer but it feels a bit "taily" but I think this is just that now it turns in much better than it did before.