GCSE Bitesize electrolysis has revision pages (that take you through the topic), a test and an activity. Doc Brown has a matching pairs quiz & worksheets on electrolysis, just scroll down to ’21 electrolysis and its applications’. The s-cool revision site lets you revise the topic, summarizes the topic & tests you on it.
IGCSE Chemistry: Electrolysis, an 11m lesson from ChemistryKlipz.
Science Bank 2 (Electrochemistry): part 1 – electrolysis of a melt (to 5m 30s); part 2 – electrolysis of solution (to 9m 30s); part 3 – electroplating (to 14m 15s):