The first “Non-Bond”, also, in fact, the first James Bond adaptation ever filmed, has its roots in the very first James Bond novel, Casino Royale.
More info about this initial Bond production (contains spoilers). Apparently, like The Sadist bd, this blu-ray is only available from the distributor through the Amazon marketplace. This bd doesn't seem to be reflected in the bd.com database that I could find, but maybe it is hidden somewhere. THE original Bond TV production from 1954 has been released on bd, although whether this bd constitutes a 'gray area' release I have no idea.