If I might be so bold as to assume this has never changed, you should find two bolts behind the bottom band on the grille. Remove these and the grille will slide downwards. Thats how it comes off on my 2005.
Ooooo! Nigel, I thought that Dave's explanation above was pretty clear with several supporting +1s. Maybe there's more to the terse reply.... being a Lancastrian we tend to have a similar view of the White Rose clan as those North of the border when it comes to being "careful" with the small change, stereotypically that is
