Sources: CCW, how much will my water bill increase by 2030 (Ofwat final determinations, 19 December 2024); Water Magazine, Ofwat fines Thames Water (28 May 2025); Civil Service World, Ofwat to be scrapped (22 July 2025); Dŵr Cymru Welsh Water, Glas Cymru; NI Water, who we are; GOV.UK, South Western Railway services transferred to public ownership (May 2025). Diagrams drawn with Rough.js and perfect-freehand, both MIT licensed. Your answers are saved only on this device.