Mobile van tech? Bucks/Herts

[22]

Anyone know a good light commercial mechanic around these parts? Vauxhall Vivaro drove in limp yesterday & today won't start.

Had egr, air filter & diesel filter off, battery disconnected, but above my pay grade really.

Between Chesham & Bovingdon so Bucks or Herts based would be OK (but ideally mobile & works weekends).

[22]

Looks like it's the MAF sensor. Starts and runs when disconnected. Will maybe try cleaning and then replace if necessary. Still be good to have a local mechanic contact if anyone has any suggestions.