First broadcast 1st January 1972.
The headmaster's "Clean Up Fenn Street" campaign is in full swing.
Deryck Guyler - Norman Potter
Noel Howlett - Mr. Cromwell
Joan Sanderson - Doris Ewell
Richard Davies - Mr. Price
Erik Chitty - Mr. Smith
Vivienne Martin - Miss Petting
Bernard Holley - Mr. Hurst
Barry McCarthy - Terry Stringer
Charles Bolton - Godber
Billy Hamon - Des
Rosemary Faith - Daisy
Drina Pavlovic - Celia
