I found two resources of varying quality that are potentially useful for teaching the theory behind this topic.  These are:

https://www.teach-ict.com/gcse_new/databases/validation_verification/miniweb/
https://www.teach-ict.com/gcse_new/data_info_knowledge/quality/miniweb/

I do think that a video and then a practical application of cleaning a dataset would be more engaging.