Thanks Steve had a full carbon clean done recently and it had flagged up one of the glow plugs ,maf sensor and lumbar sensor but apparently the clean cleared all those faults! I didn't have the clean done to sort this problem but it made no difference to the starting issue but the car does run better! Think I will start with the glow plugs as this is a cheap job I can do myself! Thanks again. Btw very little smoke and not lost any coolant etc.