Records from a Big Bank - details of unclaimed estates

These records are from a Big Bank. I was googling a new relative today (12 Aug 2015) when I noticed that they appeared in this enticing document called 'unclaimed accounts', published by the bank under the authoritative-looking URL of important-information/pdf/unclaimed-final-ac.pdf. How very interesting. It was definitely our guy, and contacting his grandson on Facebook got me confirmation of this barely an hour later. I went back and grabbed the names of as many people with British connections that I could to highlight them here. I understand that this bank has sold its unclaimed assets to a third party, in at least one country where it operates. More recent versions of this list do not include those listed below. These bank accounts could have been opened before 1982 (when Harare became known as Salisbury) and some were opened after 1974 (when the delights of Cleveland opened their doors). I think I would be annoyed as a relative if I was told the money had disappeared, so perhaps genealogists can help people look into this project?
go to www.haine.org.uk/wills/unclaimed.php