The programme deals with a wide range of topics relating to the Welsh public, and is usually told through the eyes of those at the heart of the story.
Up until 1982, HTV Wales' bilingual news department had produced a number of current affairs programmes in both languages including Yr Wythnos, Welshscene and Outlook.
Following the creation of S4C, a dedicated Welsh language television channel, HTV formed designated current affairs teams for the first time to produce two programmes - Y Byd ar Bedwar on S4C and Wales This Week on its parent channel.
It has won a number of awards for its investigative journalism and was the first television programme to break the story of child abuse in North Wales Children's Homes during the 1980s.
Former presenters, producers and reporters include David Williams, Chris Segar, Bruce Kennedy, Clare Hudson, Judith Davies, Catrin Griffith, Paddy French,David Vickerman, Mai Davies, Hywel George, Helen Callaghan and Jonathan Hill.