The characters in all four plays are in their twenties to forties and can either be played by the same four artists or by separate casts. The first, Mill Hill, calls for 2 Men and 1 Woman, the remainder, Bermondsey, Gloucester Road and Marble Arch, call for 2 Men and 2 Women each. These four plays are linked by their themes of sexual entanglements and by their central or suburban London settings.