Hi Mike thank you for your advice, duly noted. Car booked in for crankshaft sensor replacement. Hope this works. Have tried better fuel, fuel cleaner, major service & 2 diagnostic checks to reveal nothing at £100.00 per time. No lights on dash when it happens. Just cuts out completely, if I wait 2-3 minutes then restart no problem and it might drive for 1000 miles before happening again. May cut out on standing or while driving hot or cold at all speeds. Has not gone into limp mode just cuts out completely.