I love LiDAR. Proper good. I think the BGS were going to LiDAR the whole of the UK, but I could be wrong. I wonder if this is freely downloadable?
Just noticed there is an online mapping tool showing the UK lidar map (Lidar is laser altimitery that gives a very accurate z or elevation value and can also see through trees - if filtered right). It’s an elevation point every metre... not 100% coverage but..https://houseprices.io/lab/lidar/map