Realised I'd not given an update.
Holiday was great, bit too hot to be honest.
Anyway, PV progress;
Everything is in and up and running.
No issues with the physical installation. Generating nicely, 40 kWh over the 2.5 days it's been running.
Was originally set up incorrectly for overnight top up of the battery but that was soon sorted.
Only issue is with monitoring. First day the grid import value was -4 kWh, yesterday grid export was -49 kWh and today it's not showing any self usage.
Might be a faulty data logger so going to chase it up next week if it doesn't sort itself out over the weekend.
(Tried uploading images but looks like forum is playing up)