UPDATE

Decided to let my mate remove the limiter and got ford to recover the car as a none starter.

Oh what a can of worms this has opened.

They couldnt find any fault codes and decided to check wiring etc even though I dropped plenty of hints regarding immobiliser issue.

I had to jump start the van few days before as I left light on for a few days.

I told ford this as they asked any issues in the last week.

Now they have come back to me and told me Ive sent a power surge and messed up abs(£750 ish bill).

This is absolute bullshit and fraud right infront of my eyes, the van was fine after a jump start and drove perfect.