Williams has appeared in various television and film projects, often playing himself or taking on comedic character roles:

The most significant exploration of Williams as an "actor" is the film Better Man . Unlike traditional biopics, Williams chose to be portrayed as an (performed via motion capture by Jonno Davies).

: He provided the voice for Dennis the Dog in the 2015 film Absolutely Anything and participated in the lyric video for Forbidden Road (2024).

: He appeared as Dr. Egon Spengler in The Keith and Paddy Picture Show (2017) and has made numerous appearances as "Self" in documentaries and series like Take That (2026).