[CWH]

Well, after my -long - snail-mail with attachments to the ICO at the beginning of April, I have finally had a reply.
In essence:
Your complaint was passed to one of our casework teams, who deemed it important enough for it to be allocated to a case worker. The case worker will, after further investigations, be in contact with you regarding what further steps may be taken in this matter.

Just maybe, all the complaints, with detailed comments and evidence, are having a positive affect, (from our point-of-view).

Colin