Born to twin sisters on the same day in London, France and Margaret are more like brother and sister than cousins. The close relationship between the cousins is suspended when Margaret is sent abroad for schooling. Now a young woman, Margaret returns to London and resumes her intimate connection with France.
Unfortunately the movie The Buttercup Chain is not yet available on HBO Max.
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Sound | Ron Conley | Boom Operator |
| Art | Wilfred Shingleton | Production Design |
| Sound | Chris Greenham | Sound Editor |
| Writing | Janice Elliott | Novel |
| Production | Leslie Gilliat | Executive Producer |
| Costume & Make-Up | Richard Mills | Makeup Artist |
| Sound | Paul Le Mare | Sound Recordist |
| Sound | Doug E. Turner | Sound Recordist |
| Costume & Make-Up | Gabriella Falk | Costume Design |
| Editing | Thelma Connell | Editor |
| Art | Fred Carter | Art Direction |
| Production | John Whitney | Producer |
| Production | Philip Waddilove | Producer |
| Camera | Douglas Slocombe | Director of Photography |
| Sound | Richard Rodney Bennett | Original Music Composer |
| Writing | Peter Draper | Writer |
| Directing | Robert Ellis Miller | Director |
| Camera | David James | Still Photographer |
