Thank you. I'll look into making a complaint to the FCA. Yes it was a PDL from 2013 as far as I can tell from her credit report. It's not quite SB yet though so I think this is their final attempt to collect.

Hi, I appreciate any help on this one. My mum received a letter before claim from bw legal acting on behalf of pra group so we sent a cca request to pra group. This morning she got a response from pra group saying that they were unable to fulfil her request as they have not yet completed the required security checks in order to verify her identity and sent the postal order back. They want her to write or phone to tell them her name, date of birth and previous addresses even though we put her name and adress at the top of the cca request along with the reference no. from bw legals letter. If anyone could give me some advice on how to respond that would be great. I've sent cca request to other dca's in the past but I've never received that response.