86.Section 45 provides that a BID levy can only be raised while BID arrangements are in force, and provides that the levy is to be calculated in accordance with the arrangements. The BID levy is not limited to being calculated on the basis of rateable value. This section also allows a BID levy to be different for different cases, which means relief(s) could be provided from the BID levy. (These reliefs would not necessarily be of the same nature or level as reliefs already given in respect of rates for empty properties etc).