5G Bands in the UK

Ofcom (Office of Communication) auctioned spectrum licences in 3.4 - 3.6 GHz in April, 2018. See a table below with spectrum allocations.

3GPP Band Number	Frequency Range	Duplex Mode	Operator
n40	2350 - 2390 MHz	TDD	Telefonica (O2)
n78	3410 - 3460 MHz	TDD	Vodafone
n78	3460 - 3480 MHz	TDD	H3G (Three)
n78	3500 - 3540 MHz	TDD	Telefonica (O2)
n78	3540 - 3580 MHz	TDD	EE