Odd numbers on Ford Focus ST170 Radio?

On my Radio (the standard 6 cd changer model) in my ST170 (03 plate), the FM stations only tune in to odd numbers! ie, 99.1, 99.3, 99.5, 99.7 etc. Where I come from radio 1 is 99.6, I can get a fuzzy version of radio1 on 99.5 but I can't really listen to it without a constant fuzz, it is driving me mad.
The radio was like this when I bought the car, about 8 months ago.

Any help appreciated.

Thanks.