I like this FK Top Kote, gives a good clean non-shiny finish and does a great job on all the glass surrounds too.
@Watts, the vagaries of the British weather
. Fortunately, I had ideal weather conditions earlier this week for washing my car; dry, dull and overcast / no sunshine so no problem with warm paintwork or water spots.
+1 for FK Top Kote. Used it on the black grained plastic parts (rear diffuser, sills and front lip) and dressed the tyres with it earlier this week when I washed my car; forgot to do the wheel bolt covers though!
. Really like this product and it's non-shiny finish, and it has good durability too. I don't use it after every wash (I find it's not necessary), so a bottle lasts me ages.