Ofcom and ICO - Research into the effectiveness of the Telephone Preference Services

Published 24|07|14

This report summarises the findings of a study designed to look at the effectiveness of the Telephone Preference Service (TPS); specifically, exploring whether signing up to the TPS significantly reduces the number of live marketing / sales calls received. The study was run by Ipsos MORI on behalf of the Office of Communications (Ofcom) and the Information Commissioner's Office (ICO), and took place between September 2013 and May 2014.