Update
Ok, I now have the fault codes - all are 'related'
P0100 Mass or Volume Air Flow "A" Circuit Malfunction
P0101 Mass or Volume Air Flow "A" Circuit Range/Performance Problem
P010B Mass or Volume Air Flow "B" Circuit Range/Performance
P010F Mass or Volume Air Flow Sensor A/B Correlation
P2A00 02 sensor circuit range/performance bank 1 sensor 1
P0238 Engine Turbocharger/Supercharger boost sensor "A" Circuit High
P0234 Engine Turbocharger/Supercharger Overboost Condition
P2015 Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 1
I am pretty sure the MAF is ok, but may try a swap out with a known good one to be sure.
I may just do an EGR inspection/clean next. It won't harm if it needs doing.
But if anyone fancies suggesting some other easy checks/swaps/changes, I'd be pleased to hear them
Cheers