Ofcom’s first 5G spectrum auction was completed in April 2018, with EE, O2 , Vodafone and Three all winning some spectrum. O2 acquired the most, winning all 40MHz of the 2.3GHz spectrum that was being auctioned (paying £205,896,000), as well as 40MHz of 3.4GHz spectrum (for which it paid £317,720,000).