Local authorities and housing associations have been asked to undertake a data collection exercise on residential buildings 18 metres and over in height to identify their external wall systems. The responsibility for collecting and providing information for the data collection lies with local authorities and housing associations. The Department published a technical note on 18 July 2019 to provide local authorities and housing associations with additional support in identifying the details of external wall systems of buildings above 18 metres. Subsequently, in September 2019 we announced the provision of £4 million new burdens funding to support local authorities with the data collection. The Department is in regular contact with local authorities and housing associations to support them as they carry out the data collection.