Children from wealthier areas receive a better standard of childcare, according to a new report.

Research by Policy Exchange showed Ofsted judged 79% of childminders in the richest parts of England as good or outstanding, compared to 64% in the most deprived areas of the country.

It also found that children from richer areas were further ahead when they started primary school.

In the City of London and Trafford 78% were at a good level, compared to just 51% in Middlesbrough at the bottom of the list.

The vocabulary development of the poorest children was 16 months behind those from the highest income families, the report said.

Harriet Waldegrave, the author of the report said: "Early years education will only have a positive impact on a child's development if it is of a high quality.

"While provision is improving, it's not doing so fast enough. Most worryingly of all, lower quality provision in disadvantaged areas means positive effects of early years education are less likely to be seen for the children who need it most."

The government is now being asked to improve the quality of early years teaching and the financial support it gives to families with lower incomes.

In response, a Department for Education spokesperson said: "This report is absolutely right to say early years education needs to improve.

"We need to learn from other countries that ensure the profession is better trained and give them the freedom to do their job. We will be announcing plans on improving the quality of provision shortly."