National Cyber Security Centre (NCSC) — free online cyber‑security advice

The UK’s National Cyber Security Centre provides free, authoritative guidance on online security for individuals, small businesses and organisations. Resources include practical steps to protect devices and accounts, guidance on responding to scams and targeted advice for parents and small firms; all materials are publicly available on the NCSC website. Anyone in the UK can use these resources without charge — just visit the site to read guidance, download checklists and access toolkits.