O2 UK has announced that it's carried out its first tests in Slough
O2 Achieves 150Mbps Download Speed In 4G UK LTE Trial - ITProPortal.com
As well as those news items. there seem to be some people starting scares it would interfere with cable TV - maybe there's some misunderstanding of a few things, like frequency allocations like the 800 MHz to be released from analogue broadcast TV, or prospective 2.6 GHz bands due to be auctioned some time or other, or the likelihood of fibre optics being affected anyway.