Given the current conditions, WiMax is not likely to gain widespread adoption in the U.K. anytime soon. WiMax requires exclusive spectrum use but only a few companies, i.e., PCCW and Pipex, own a spectrum. These companies also do not have their own network that is needed to allow for both fixed and mobile use of the technology. British regulator Ofcom hopes to roll out more spectrum, but the bands — two x 100MHz bands in 10GHz that is expected to be available by 2007 — may not be a good match for WiMax. The radio signals cannot go through buildings, thus requiring the infrastructure to be line of sight.