Vivat RexEpisode 14: St. Crispin's DayBBC Radio 4 Extra Duration: 1 hourFirst broadcast: Thu 17th May 2012, 10:00 on BBC Radio 4 ExtraLatest broadcast: Fri 18th May 2012, 03:00 on BBC Radio 4 ExtraRichard Burton narrates the playwrights' tale of the English Crown. Two nations clash in fierce battle. Starring Martin Jarvis.GenresDramaHistoricalSeriesVivat Rex Source: BBC Online