John,
One reference source for the subject lock makers is located in the book; English Gunmakers of the 18th and 19th century; By, De Witt Bailey and Douglas A. Nie.
Under the listings for the city of Wolverhampton there is recorded good information on the subject lock makers.
Thanks Roy,
I wasn't looking in fact, but noted that the addresses being quoted were now bound to be "no longer active" since the domains have been closed, but thanks anyway and I'm sure your reference will be of use to others here.
