Khan Academy — free curriculum and tuition resources

Khan Academy provides completely free online lessons and practice exercises across mathematics, science, computing, economics and more, designed for school ages through adult learners. UK residents can create an account at no cost to access structured learning pathways, video tutorials and personalised practice; teachers can also use it to assign work and monitor progress. The resources are freely available online and mobile apps are provided at no charge, making it useful for catch‑up, revision and self‑directed study.