The department does not hold data on the number of council-maintained nursery places for three and four-year-olds there have been in the London Borough of Southwark in each of the last seven years.
The department does have data showing the number of three and four-year-olds in Southwark taking up their entitlement to funded early learning in a nursery as recorded in January 2017 is available in table 2LA in the main tables at: https://www.gov.uk/government/statistics/education-provision-children-under-5-years-of-age-january-2017.
The data from 2010 to 2016 can be found in the Provision for children under 5 years of age in England tables at: https://www.gov.uk/government/collections/statistics-childcare-and-early-years.
Local authorities have a statutory duty to provide the required number of places to meet parental demand for the free entitlements for two, three and four-year-olds. Local authorities will be working with providers to ensure that there are enough places to meet parental demand in the next three years.