I still find that many companies have been ignoring the ICO's 'Age Appropriate Design Code' proposals since they assume the Code is not relevant to their service. This often happens where the company has terms which say you must be 13 or 16 to use their service and they kind of figure that is sufficient. It isn't.
We now have the text of the Code that the ICO submitted to Parliament last year and you can read my summary of the key points, changes and actions you need to take here.