The extraordinary story of Russia's covert efforts to corrupt British democracy and politics in the years before invading Ukraine. MI5 declined to comment on the programme for operational reasons.

Secret footage filmed over the winter reveals ambulance workers battling the odds and A&E departments overwhelmed as patients suffer needless harm and death.

Autistic patients trapped in mental health units tell their stories, revealing a system of poor treatment, abuse and long stretches inside with their symptoms only getting worse.

More than two million pensioners are living in poverty in the UK. Dispatches follows four older people through the winter as they struggle to make ends meet.

The full story of Boris Johnson's friendship with press baron Evgeny Lebedev and his dad Alexander, an ex-KGB spy, revealing the secret fears of security services