Information on disposals of local authority stock can be estimated from information on right to buy, other local authority sales, large-scale voluntary transfers and small scale transfers to registered social landlords, and demolitions.
Information on all sales of local authority stock (including large-scale voluntary transfers and small scale transfers to registered social landlords, right-to-buy sales and other local authority sales) is collected from local authorities on the Quarterly Housing Monitoring (PIB) return. This information is published to local authority district level on the Communities and Local Government website in table 648:
http://www.communities.gov.uk/documents/housing/xls/1319863.xls
Information on local authority demolitions is reported by local authorities, for the financial year, on the Business Plan Statistical Appendix (BPSA) return. BPSA data returns since 2001-02 are available at:
http://www.communities.gov.uk/housing/housingresearch/housingstatistics/housingstatisticsby/localauthorityhousing/dataforms/