If you use a radio system for your business, you will need a licence from Ofcom. Business radio users range from taxi companies and factories, to hospitals, care homes, industrial sites and transport operators.
Update 27 November 2018: 64-66 GHz
As indicated in our fixed wireless services review statement, we have decided to change the authorisation in this band to licence exempt under new technical decisions (which are set out in updated Interface Requirements, IR 2030 and IR 2078). To implement this decision, we have made new regulations which came into force on 27 November 2018. Equipment complying with the new technical conditions will no longer require a licence to operate in the 64 - 66 GHz band.