I don't have access to my books on silver and silverplate but online I found that;
Lee and Wigfull were active in John Street Works, Sheffield England. George Shadford Lee and Henry Wigfull partnership was dissolved in 1870. The business was continued by Henry Wigfull under the same style and address (John Street Works, Sheffield). The firm was converted in 1899 into a limited liability company under the style of Lee & Wigfull Ltd.
What I find interesting is that on a site on the history of Sheffield England they say that Mr. Wigfull died in 1908 so how did he continue the business unless it was one of his children that carried on.
Another source I found said that the company was in operation from 1879-1968
Yet, another source says that the Ltd. was dissolved in 1941 and the partnership (Lee & Wigfull) was dissolved in 1879.
I believe that the company was named "Stag Works." The items they made were electroplated silver (silverplate) and Britannia silver, another type of silver plate.
When I get my reference books unpacked I will see if I can sort this out better and will post it on here.