5 Faults Found:

17772 - Cylinder 4 Ignition Circuit

P1364 - 35-10 - Open Circuit - Intermittent

17769 - Cylinder 3 Ignition Circuit

P1361 - 35-10 - Open Circuit - Intermittent

17766 - Cylinder 2 Ignition Circuit

P1358 - 35-10 - Open Circuit - Intermittent

17763 - Cylinder 1 Ignition Circuit

P1355 - 35-10 - Open Circuit - Intermittent

16795 - Secondary Air Injection System

P0411 - 35-10 - Incorrect Flow Detected - Intermittent

Could this be related to me leaving a laptop charging whilst parked up for 20 mins ??

Or is this the root of all my running issues ??

Coil faulty perhaps? Or check for any furry multi-plugs in the wiring loom.

Coils checked due to running issues, over the last few weeks, and all four at once ?? Unlikely !!

If it stops raining I'll be looking for dodgy wires later.

I didn't know whether or not it was four individual coils, don't know the engine. In that case I'd check for wiring problems first like you say.

All 4 at once, I'd be looking at the wiring and fuses. If you can get hold of a wiring diagram look for a common component for the ignition, the coils may be earthed at one point which could be dodgy.

The casing on the secondary air pump could be coming apart.

SAI is tip top,

I think it was the laptop charging and a slight dip when cranking the engine, cleared codes ain't seen them since.

Cheers