Business Rate Supplements Bill

I have one question about Clause 1(2). Can a levying authority exempt certain areas from paying a business rate supplement? In Norfolk, if the project under consideration was the dualling of the A11, it would certainly promote economic activity in the area of Norfolk—certainly from Breckland and Thetford and all the way out to Norwich and beyond: to Yarmouth and so on—but it would be of very little benefit to King’s Lynn and north-west Norfolk. The question is therefore whether levying authorities can exempt certain areas in their area from paying the BRS.