Labour leader Ed Miliband is expected to make infant class sizes the focus of a key election pledge. We look at the situation locally.

Mr Miliband is due to say a future Labour government would cap class sizes for five to seven-year-olds at 30.

By existing law, no infant class being taught by a single teacher should have more than 30 pupils in it.

However, there are a number of exemptions, for including children in care, children who entered the school because of an admissions appeal, and children admitted outside the normal admissions round who have a parent in the armed forces.

According to school census data from January 2014 (table 11), 93,345 infants in England were in classes with 31 or more children in them.

In Norfolk, there were 1,033 pupils, in 33 classes. The average infant class size was 26.4 pupils.

In Suffolk, there were 437 pupils, in 14 classes. The average infant class size was 26.2 pupils.

In Cambridgeshire, there were 1,066 pupils, in 34 classes. The average infant class size was 27.1 pupils.

Information about how many of these, and other classes in England, were unlawfully large has been removed from the government website 'while further investigation of the data submitted by schools and local authorities is undertaken'.