 In 2010 , it was announced that long @-@ time supporting cast members Ken Kitson and Louis Emerick would spin their characters off into their own stage adaptation , titled An Arresting Night . Kitson and Emerick , who appeared together on Last of the Summer Wine as Police Constables Cooper and Walsh from 2003 to 2010 , reprised their roles in an improvised stage play . While some elements of the series will be used , the majority of the play was improvised , with Kitson and Emerick each deriving their cues of what to do from the audience . The play was successfully performed in Holmfirth , after which dates were announced in Emerick 's hometown on the Wirral Peninsula . 
