Have had a small mishap involving a yelling baby, garage door, roof racks and my 3 month old Norco Revolver. The yelling baby may have been me after the event....
The bike seems to have been the least affected of the three, but would still prefer to get it checked out by an appropriate adult before committing to any more offroad adventures.

Anyone know where in Christchurch would be a good place to get an expert eye run over the frame? Is there a pressure test type setup which would identify any issues I can't see with the naked eye?

You could try Plastec on Gasson St
I know they do repairs on carbon bikes and might be able to check for you

Plastec have done a couple of repairs for me on carbon roadie frames. They did a good job of the repairs and the paint and had undertaken training (in the USA I think). They will give you an opinion on the integrity of the repair that they can achieve.

Cheers, will give them a go.