- Country: UK
- Genres: Documentary
- Release: 1961-09-18
- Director: James Hill
- Writers: N/A
- Language: English
- Stars: Shelagh Delaney , John Osborne , Vanessa Redgrave
- Runtime: 28 min
- Awards: N/A
- AKA: A Sunday in September (United Kingdom) , A Sunday in September
- Plot: Television documentary about the nuclear disarmament demonstration at Trafalgar Square on 17th September 1961.
- IMDB:tt1734411