The report by the Office for Standards in Education, Children's Services and Skills (Ofsted), published Wednesday, found that 282 vulnerable children - many of them already known to social services - died in the 17-month period to the end of August.
Another 136 suffered serious harm or injury and two-thirds of those killed or hurt were babies less than a year old, it said.
Ofsted is responsible only for the region England, and its figures do not cover cases of abuse and neglect in Britain's other three regions - Scotland, Wales and Northern Ireland.
The report comes amid a national furore over child abuse following the conviction of a mother, her boyfriend and a lodger for causing or allowing the death of her 17-month-old baby.
The death of the boy, who can only be identified as Baby P for legal reasons, has caused an outcry over the quality of care provided by government social service workers and doctors in England, who had Baby P in their register of children at risk of harm before he died.
One doctor failed to spot Baby P's broken back and eight broken ribs.
The Ofsted figures are considered shocking because the main children's charity in Britain, the National Society for the Prevention of Cruelty to Children (NSPCC), had so far estimated that one child died from cruelty each week.
'We are still not learning enough - or fast enough - from serious case reviews which happen when a child has died or been harmed through neglect or abuse,' Ofsted chief inspector Christine Gilbert said.
Source: Newstrack India
The Observer: Ofsted's child abuse report was misleading
Haringey: Creative accounting
Baby P forum on the 3 arguidos
Sabah al-Zayyat, the doctor sacked over Baby P, says she is shocked by ‘tragic’ case
"The doctor, who qualified in Pakistan and worked in Saudi Arabia before coming to Britain in 2004, has since had her contract terminated with Great Ormond Street Hospital, which is responsible for child services in Haringey. She has also been banned from working unsupervised and faces an investigation by the General Medical Council."
(Sacked as in really, really sacked - or sacked as in now working under supervision?)
Final insult: Now public faces paying millions to provide Baby P's mother with a new identity.
The police signed a care plan that allowed Baby P to be returned home.
Police officers are being forced to make "ludicrous" arrests in an attempt to hit Home Office targets:
Cheshire man cautioned for being 'found in possession of an egg with intent to throw'.
Two schoolgirls arrested after chalk drawing on pavement.
Two children arrested under Firearms Laws after being found in possession of toy pistol.
Man cautioned for throwing glass of water over girlfriend.
Seventy-year-old pensioner arrested for cutting back neighbours conifers too vigorously.
Boy arrested for throwing a cream bun on a school bus.
In Kent, a child was arrested for throwing a slice of cucumber from a tuna mayonnaise sandwich at another youngster.
Man arrested for hitting girlfriend with sandwich. The type of sandwich hurled was not specified in the report.
HITTING THE TARGETS
MISSING THE POINT