This is a Three UK mast located on Bryn Lane (SY16 1QU) in Newtown, Powys sporting a full 4T4R 4G rebuild (Band 20 800, Band 32 L-1400, Band 3 1800 and B1 2100) using Huawei 5301 and 5501 RRUs.
Three's site ID is SY0138.
Pictures: 23rd October 2019