It probably bears keeping in mind that none of the great British gunmakers escaped the 20th Century anywhere like they entered it. Beaumont's book makes quite clear that had not new owners (non-gunmakers) stepped in, Purdey's would have likely failed after World War II.

Moreover, Purdey and Hollands are no longer, strictly speaking, British gunmakers. They are now French gunmakers, who happen to build their guns in London ...

OK, deliberate hyperbole but this talk about who failed and who didn't is in some sense irrelevant when you consider that the gunmaking families that founded the best London names are long, long removed from current ownership.