My automatic car is slow to change gears when cold - what is the problem?

I have a problem with a BMW X5 3.0d. When it's cold it seems to be very slow to change gears. However when I get to the top of the street all seems to be okay. Is there a quick fix?

I own a six year old diesel - what are the implications of the new MoT?

I own a 2012 Citroen C-Crosser 2.2 HDi Exclusive Auto. How will the new emissions test affect me? The car has been main dealer serviced from new and has covered 30,000 Miles. Although the mileage is low,...