Thank you very much for the clear reply.
We did not want to jeopardise our claim and risk losing it on a technicality of not following proper notification to the right persons prior to making a claim.
This is what we sent to him in January 2015, in the initial stage, where he had asked us to outline our concerns in writing.
We would appreciate your advice as to whether, this would be comprehensive enough particulars for us to put on the N16A?
Once again, thank you very much.
Surprisingly!, just now, today we have received a reply from him!!!, following our email to him on Friday, where we copied in the Land Registry Search, and asking him to confirm if he was the legal owner.