Diagnosing fuel pressure issue - car conked in middle of road

Today at the best time - on the way to work in the rush hour - my MkIII 2.0TDI Octy conked out quite suddenly in the middle of the road, and didn't start again. No warning signs at all, no lights on dashboard no warnings on the screen/dash. 

I'm looking for help diagnosing - it's at a friend's garage who's a good basic mechanic, but not up on ECU/error code stuff, so looking for help with how to diagnose/fix this before I give in and take it to a Skoda expert. I've got the error codes from a scan today from the AA who towed me to the garage.

Any and all advice on this much appreciated! symptoms and error codes below

ob

Symptoms:

- When turning the ignition the engine starts but cuts out immediately within about a second or two.

- It is possible to rev it quite hard, but it conks after about the same amount of time as if you don't rev it hard

- No obvious mechanical faults, 3/4 tank diesel.

- Last oil service 7 months ago

Error Codes:

System : Engine management - VEH / Engine management EDC 17C64 UDS

Status :U112300 - Data bus. Error Message : Signal reception. Sporadic fault.

Status :P008700 - Rail: Fuel pressure. Error Message : Pressure too low. Static fault.

Status :P025D00 - Control unit, (Fuel supply): Actuation. Error Message : Short to B+. Static fault.

Status :P245200 - Exhaust gas differential pressure sensor (Particulate filter (bank 1)). Error Message : Electrical fault. Sporadic fault.

Status :P210200 - Throttle valve control unit. Error Message : Signal too small. Sporadic fault.

Status :P324300 - Throttle valve control unit. Error Message : Electrical fault. Sporadic fault.

Status :U042800 - Steering wheel angle sensor. Error Message : Signal improbable. Sporadic fault.

Status :P106500 - Fuel pressure regulation. Error Message : Control difference. Sporadic fault.

Status :U140A00 - Terminal 30. Error Message : Open circuit. Sporadic fault.