DWP estimated no more than 5000 pre 96 exempt case. I estimated 40,000 a big difference.
Merseyside has 5 councils each of whom have stock transferred organisations running the former council housing. I have preliminary figures from two of these in St Helens and Wirral which total over 900 cases and both equate to around 15% of bedroom tax cases in their respective LA areas (see below too).