Duncan and Paul want a colour television set for the doctors' common room but the Binghams want a table-tennis table as Lawrence professes to be excellent at the game. Dick stays neutral. To decide which item they should have a ping-pong match is arranged between Waring and Collier on one side and Bingham and Dick on the other with Mary as umpire - the winners to bring in their choice. Dick and Paul are both useless as is Mary as the umpire and even Lawrence's shortcomings are eventually exposed.