I got my car back yesterday, report from dealer indicates following:
CArried out test via diagnostic machine, no faults stored. Checked fuses and relays, Checked actual valves, cheked fuel pump activation, removed rear seats and checked connection at Fuel pump, Cheked fuel pump current consumption, cheked crank angle sensor signal. Checked continuity of wires to engine control unit, found connections for crank angle sensor loose on control unit causing engine to cut out. Removed most engine wiring harness and replaced wiring for crank sensor. Insulated wiring harness and refitted all parts, carried out extensive road test.

NOT CHEAP at all!!!!