Getting the car back tonight.
They think they have got to the route of the problem. A sensor on the gearbox the reads the engine speed was misreading the speed, sometimes down to '0'. (?) Hope that makes sense as me and my sausage fingers aren't to technical.
Arnold Clark Blackpool have just changed this off there own back, not seaking payment due to the PITA it is trying to get co-op to authorise jobs to be done under warranty. Should of cost around £90 for the part +fitting so ill bung the service manager a bottle of plonk.