Video Clips Series 3 trailerIn In The Long Run Series 3, Mama is here to visit. From Series 3. Featuring: Idris Elba (Walter), Bill Bailey (Bagpipes), Madeline Appiah (Agnes), Jimmy Akingbola (Valentine), Ellen Thomas (Mama). TrailerThe trailer for the comedy created by Idris Elba. From Series 1. Featuring: Idris Elba (Walter).