If the ECM has been to ECU testing in Heanor, then they have no means of real time testing of their repairs.
As I don't wish to break their warranty seals, I would require the ECM
and the EWS3 immobiliser in order to test it.
I have this very day been to Ripon to sort out an NNN100692 which has been back to them
twice !! unsuccessfully.
30 minutes after my arrival,the car which had been out of commission since before Christmas was up and running
Brian