Staying Safe In Manchester.....
ChatterBank2 mins ago
No best answer has yet been selected by karenbooth. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.This is common on older engines. The valve seals start to leak a bit and when the car is parked a bit of oil gets into the cylinders and causes smoke on starting.
It would be quite expensive to fix and shouldn't affect your MOT so I'd not worry too much about it.
Unless the car's new of course which would be quite a different matter.