This is the Tenure data (KS402) from the 2011 Census. The data provides the number of households by their tenure.
The questions were:
Does your household own to rent this property? Tick one box only
Owns with a mortgage or loan
Part owns and part rents (shared ownership)
Rents (with or without housing benefit)
Lives here rent free
If a respondent answered with one of the last three options they then answered the following question:
Who is your landlord? Tick one box only
Housing association, housing co-operative, charitable trust, registered social landlord
Council (local authority)
Private landlord or letting agency
Employer of a household member
Relative or friend of a household member Other
The 2011 census in England and Wales took place on 27th March 2011. It provides a snapshot of the population and its characteristics on that day.
Further information about the census estimates, including details about the methodology is available here: http://www.ons.gov.uk/ons/guide-method/census/2011/index.html