Elections to Southwark Council were held in May 1978. The whole council was up for election with a 28.7% turnout. There were 25 wards rather than the previous 23 and 64 councillors rather than 70.
The by-election was called following the death of Cllr. Siah Cox
The by-election was called following the death of Cllr. Peter Flower
The by-election was called following the death of Cllr. Enid Boxall
The by-election was called following the resignation of Cllr. Frank Brean