Whistleblower, the BBC’s flagship undercover series, is back, this time exposing serious failings in our multi-million pound childcare industry.

Following tip-offs from whistleblowers, the programme reveals just how far an undercover reporter – with no experience or relevant qualifications – can get in the world of childcare, and what she discovers along the way.

Revelations go far beyond the occasional bad nursery. She finds evidence of widespread failings – putting the welfare and safety of children at risk on a daily basis.

This investigation is compelling and should be essential viewing for any parent.

Previous Whistleblowers have exposed bank fraud, sharp practice by estate agents, health and safety risks in supermarket food, corruption among car parking attendants and serious security lapses at a major UK airport.

Wednesday 5 March
8.00-9.00pm BBC ONE