Well, one thing to note about Smith & Sons' is that it's a very small tobacconist located in London. If I'm not mistaken, S&S is considered a historical landmark of sorts due to how long it has been there and how well known they are. Therefor if the store is sold, it has to remain a tobacconist. It may even have to keep the same name. Feel free to look it up and correct me if I'm wrong.
Anywho, because the place is so tiny (my buddy has actually been inside) they don't blend their snuff on any large scale (compared to other producers). We in the U.S. are not their target market, nor is snuff the bulk of their sales. So, it probably wouldn't make
sense to sell their snuff to a wide range of other distributors, let alone any which would be willing to ship here. Quite honestly, the tobacconist website I posted is the only place other than S&S that sells their brand. Even then, they only have two flavors.
Here is a pic of some of my S&S and a couple other pics just for the hell of it.