Slight missfire when engine is cold
 

Hi all can anyone shed any light on a slight problem that has just started.My car is a MY00 UK turbo 2000.The car starts fine but after more or less a mile the car suddenly judders and a slight missfire/stutter occurs this can last for 20 seconds at the very most only does it once,clears and then is fine for the rest of the journey,this only happens from cold.Should I be looking at the MAF sensor coil pack/leads as plugs where new last year only done 3k max since.Are there any checks I can do..The car is standard and other than this problem is A1 in every respect.Thanks in advance for any advice...