In his weekly That’s Entertainment column, Andy Tyler takes a look at the local arts scene. I’ve often commented in this column on the great variety of live events we enjoy in Lynn and West Norfolk; My reviews and reports on them are usually positive and favourable, there’s a simple reason for that – standards are high. Long may they remain so! Standards are very high at Westacre Theatre, confirmed in recent performances of Harold Pinter’s fine and troubling play: Betrayal. Premiered in 1978, the play, based on events from his own life, focuses on the break up of a marriage, but in reverse chr…