HomePeople Biography and filmographyMark Jefferis Biography unavailable on TMDB. Movies (5)TV shows (3) Movies (5) Muppet Treasure Island1996 · Additional Muppet Performer One Last Chance1990 · Terry Turtle Diary1985 · Policeman at Square (uncredited) Florence Nightingale1985 · Young Soldier Tightrope to TerrorTightrope to Terror1983 TV shows (3) Wycliffe1994 · Colin the Landlord Screen One1989 · Terry Tom Brown's Schooldays1971 · Harker