I don't think there is any legal implication in them not telling you that the owner of the debt had changed.(posted 8662 days ago)But inaccurate documentation, misdated documentation... all are weapons on your side. You should read the site fully to get an idea of how you should use this information.
Yes you can serve a SAR on a solicitor. And you should. You should serve a SAR on everybody involved if they are registered with the DPR.
It has become common for recipients to return SAR's for various reasons. There is a limit to how much you have to do to prove who you are or what relationship you had with the lender. Name, birth date, addresses lived and, arguably, the roll number of the mortgage should be all yo have to give. If they ask for more, bang in a complaint to the DPR (who will attack it with the full ferocity their rubber teeth allow, I'm afraid to say. But it is worth doing anyway).
Lee
Lee