In 2014, Ofcom announced in the wake of a year-long "consultation" -- a rule making proceeding -- that it was ending Amateur Radio access to significant portions of the 2.3 and 3.4 GHz bands, where Amateur Radio is secondary. The consultation followed the release by the Ministry of Defence of 40 MHz of spectrum at 2.3 GHz and 150 MHz of spectrum at 3.4 GHz.
"The 2.3 and 3.4 GHz spectrum is needed to provide additional capacity to meet growing consumer demand for mobile broadband," Ofcom said in a statement. "It is important that the frequencies are made available as quickly as possible for the benefit of consumers and industry."
Ofcom also has published a decision to draft regulations allowing Wi-Fi use in the Amateur and Amateur-Satellite Services 5,725-5,850 MHz band. "To make connections faster, we are making regulations to open an additional 125 MHz of spectrum in a 'sub-band' within the 5 GHz frequency range for Wi-Fi -- while ensuring protection for other users, such as satellite services," Ofcom said. The additional sub-band increases the number of 80-MHz channels available for Wi-Fi from four to six.
In 2015, Ofcom said it was considering the Amateur-Satellite Service allocations at 10.475 GHz and 47.0 GHz for 5G use. Ofcom published an update on spectrum bands above 6 GHz that might be suitable for next-generation mobile, often referred to as "5G."