In 2016, the Home Office launched its Building a Stronger Britain Together (BSBT) programme, a key part of the government’s 2015 Counter-Extremism Strategy. M&C Saatchi supports BSBT as the strategic delivery partner and the programme has entered its fifth year (2020/21). The government commissioned the independent research agency Ipsos MORI to evaluate the programme, and this report presents the findings of evaluation activity conducted during the first four years of BSBT through to January 2020 and builds on the previously published 2019 BSBT Progress Report.