Complex sentence: Wendy Craig played frustrated housewife Ria Parkinson, Geoffrey Palmer played her phlegmatic husband, Ben, their youngest son, Adam was played by Nicholas Lyndhurst and their older son, Russell was played by Andrew Hall.
Split into simpler sentences: Wendy Craig played frustrated housewife Ria Parkinson, Geoffrey Palmer played her phlegmatic husband, Ben. Their youngest son, Adam was played by Nicholas Lyndhurst and their older son, Russell was played by Andrew Hall.