O2 has installed the first permanent 4G mobile mast in Staylittle, in Powys, Wales, bringing mobile connectivity to the rural community. In summer 2015, Staylittle experienced a total communication black-out, leaving the village cut off for nearly two weeks. Residents relied on one working landline in the local Post Office and satellite home internet. In response, O2 installed a temporary 2G mobile mast in the village in 2015 and started working with local authorities to install a permanent 4G mobile mast.
Source: https://www.telecompaper.com/news/o2-brings-4g-coverage-to-welsh-village-staylittle--1198809