Bless This House centres on life in Birch Avenue, Putney, where travelling stationery salesman Sid Abbott (Sidney James) and his wife Jean (Diana Coupland) live with their teenagers: Mike (Robin Stewart) is fresh from art college and more pre-occupied with protests than finding a job; and trendy schoolgirl Sally (Sally Geeson). Sally is 16 and Mike is 18. Sid and Jean constantly battle to comprehend the new generation's permissive ways and are usually out-of-touch. Their neighbours and best friends are Trevor (Anthony Jackson) and his wife Betty (Patsy Rowlands).