Hi I had this problem start after I did the last service, where it took longer to start when hot and it was intermitant when cold sometimes straight away sometimes longer. Anyway after reading this thread and others thought mine must be fuel filter related, so I had a butchers, There are four pipes to the fuel filter 2 seperate with spring clips (fidly things) and 2 that connect to a plastic push in fitting with a retaining clip. When I have removed the push fit fitting in the past it has always been tight to remove and push back in, whilst removing to check connections this time I was suprised how easily it popped out and the back in and on further investigation of the rubber seals they look worn, so I put a litle vaseline around seals and re-fitted. So far the starting is back to how it used to be. I will now be seeking new seals. There was now sign of a diesel leak and I don't know what the function of each pipe is but its seems to have solved my problem for now. Hope this is of some help to someone Tony