An undercover investigation caught some private nursery staff shouting at children and using terms of abuse like 'minger' and 'imbecile'.
The BBC documentary due to be broadcast this evening, also records breaches in the minimum staff-to-child ratios and the flouting of basic hygiene rules like hand washing after nappy changing.
Contrary to Ofsted regulation, the undercover reporter Lizz Brown, was able to obtain voluntary work and left in sole-charge of toddlers without checks on her background.
The private nurseries had been previously approved by Ofsted inspectors.
Are your children in a nursery? Are you happy about the quality of nursery care? Should nurseries be given notice of Ofsted inspections? Send us your views.
The Real Story will be broadcast on BBC One, Thursday 12 August 2100 BST/2000 GMT and live on the Real Story website.
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