Assignment  - The assignment type indicates whether or not a channel is shared with other users in the same geographical area. There are two assignment types: Shared and Exclusive. A Shared assignment type means that the channel will be shared with other users in the same geographical area. An Exclusive assignment type means that the channel will not be shared with other users in the same geographical area. Exclusive assignments attract higher fees.

Band  - Some frequency bands are more popular and therefore more congested than others. Ofcom has defined three band categories which apply to both Area Defined and Technically Assigned licence types: Highly popular bands (HPB), Medium popular bands (MPB) and Less popular bands (LPB). More popular bands attract a higher fee.

Coverage  - Business Radio systems vary in size, with some designed to provide coverage over small geographical areas (e.g. within a building) and others to provide coverage over large geographical areas. A larger coverage area can be achieved by increasing the height and output power of the antenna. Ofcom has defined three coverage categories: Category 1 – small coverage area, Category 2 – medium coverage area and Category 3 – large coverage area. A combination of the antenna height and antenna power (or the size in kms of the operational area) is used to determine the coverage category. Larger coverage areas attract a higher fee.

Population  - Use of Business Radio channels is most congested in areas of high population density. In order to provide a simple and transparent categorisation of congested areas, Ofcom has divided the UK into a grid of 50 km squares (based on the Ordnance Survey National Grid reference system) and categorised the population in each square into one of three categories: High population (A), Medium population (B) and Low population (C). These categories apply to both Area Defined and Technically Assigned licence types. Areas with a higher population attract a higher fee.