The beloved British sitcom officially aired for only three seasons between 1977 and 1979 on ITV. However, a heavily modified, lesser-known revival series was produced in 1986 for the export market. This revival is frequently referred to online by fans and bootleg file-sharers as "Season 4."

Independent collectors frequently upload these public-domain-adjacent episodes to YouTube under the title "Mind Your Language 1986" or "Mind Your Language Season 4."

Crooks hide in the school after robbing Ranjeet's cousin's shop. The students stand to win thousands on the football pools. Fifty Years On

Miss Courtney mistakes a student’s mink coat for a birthday gift. Time and Tide Feb 1, 1986 A history lesson on a Thames boat trip goes awry. Ghoulies and Ghosties Feb 8, 1986 Mr. Brown dismisses claims that the school is haunted. Feb 15, 1986 Giovanni’s mother pays a surprise visit to the school. A Rash Decision Feb 22, 1986 The class is quarantined after catching a mysterious rash. Wedding Fever Mar 1, 1986

In 1986, seven years after the original run ended, the show was revived by the New Zealand Broadcasting Corporation (NZBC) with a different cast. This revival is often mislabeled as Season 4 on DVD bootlegs, streaming sites, and torrent indexes. If you are searching for an "index of mind your language season 4," you are almost certainly looking for the 1986 revival or a mis-indexed version of the original Season 3.