This is the response to a request for the total number of changes resulting in an increase to council tax band in the last 5 years.
The VOA has published figures relating to changes to council tax bands for the financial years 2010-2011, 2011-2012 and 2013-2014.
The latest release can be found here.
Tables 3.1 and 3.2 provide figures showing changes resulting in an increase to council tax band by region and administrative area respectively.
Previous releases can be found under Council Tax Valuation Lists: Changes, on the national archives website.