A document titled, “Attitudes to Potentially Offensive Language and Gestures on TV and Radio” by Ipsos MORI dated September 2016 describes its recommendations…
“This Quick Reference Guide draws on quantitative and qualitative data collected throughout that extensive programme of research. The research used a mixed methodology involving 248 participants in total from around the UK. This comprised a series of face-to-face focus groups and in-depth interviews, and a separate quantitative online survey followed by an online community discussion with the same participants.”