When does Flambards return?

The series was based on the three Flambards novels of English author K.M. Peyton. The series is set from 1909 to 1918 (World War I is still being fought at the end of the series) Four episodes were directed by Lawrence Gordon Clark, and four others by Michael Ferguson. The story revolves around Christina Parsons, an orphaned heiress, coming of age in a tumultuous era.