I don't think it's quite that simple, as if you look at the German VW website under Dynaudio for the MK7 it says:
Sound for the finish line.
The powerful sound of the 400-watt sound system DYNAUDIO "Excite" means you can forget the unmistakable sound of the Golf GTI engine for a moment. For those who like only to have the best sound to their ears, this sound system is available as an option.
Among its highlights is the powerful sub woofer to create deep bass inimitable especially good effect. And it gets even better: All components are aligned with the spatial geometry of the Golf GTI, and thus offer you the absolute top class sound quality."
So it seems our German cousins get it ? maybe just us here in the UK screwed over again ?
It seems that everything is up in the air at the moment spec wise. I'd be surprised if they just removed the subwoofer for the UK market, the rest of the system wouldn't sound right if that was the case.
So that leaves the possibility of a specially tuned non-subwoofer system for the UK, or perhaps the people in the sales dept don't know the exact spec of the stuff yet and are just guessing based on a line in the initial price list, and the cars will turn up with the sub spec system. As Dynaudio's own write up of the mk7 system focuses on the subwoofer, I know what my money's on!
Also, note that the initial picture on the configurator used the mk6 style Dynaudio tweeters, so maybe they just cut and pasted '8 speakers' from the mk6 spec as well.