Thanks Guys.
I'm pretty sure the motor is ok as the roof will lift up at the rear but will not reverse. However if I move the slide switch to the rear it comes down the moves rearward but will not go forward back into place. Mine is the non metal key which also controlls windows and sunroof. When I closed the windows using the key the sunroof again didn't work to close but will to open.
I'll have a closer inspection of the switch today.
Cheers Mark