02:30Ladies of LettersLadies of Letters Go GreenEpisode 4BBC Radio 4 Extra Duration: 15 minutes Fri 19th May 2017, 02:30 on BBC Radio 4 ExtraWedding bells are in the air, but will Vera be invited? Comedy of correspondence with Patricia Routledge and Prunella Scales.GenresComedySitcomsBrandLadies of LettersSeriesLadies of Letters: Ladies of Letters Go Green Source: BBC Online