The Great British Insulation Scheme (GBIS) is a government-backed initiative designed to provide financial support for the installation of energy-efficient insulation in homes across England and Wales. It offers grants for loft and cavity wall insulation to eligible households, helping to reduce energy bills and carbon footprints. The scheme targets low-income households, those with health concerns, or residents in certain council tax bands, aiming to improve home comfort and contribute to the UK’s energy efficiency goals.