 " Nana 's Party " represented a directorial challenge insofar as Pemberton and Shearsmith were both on @-@ screen for a relatively large amount of the episode . The pair took turns off @-@ camera ; on one day , Shearsmith acted and Pemberton watched , and the next day , the two switched ; they were , however , tired , not least because it was the final episode of the series filmed . " Nana 's Party " required more direction than " Cold Comfort " , due in part to the larger number of actors . Pemberton and Shearsmith leaned strongly on Stephan Pehrsson , their cinematographer . While Pemberton and Shearsmith handled staging , Pehrsson handled cinematography . 
