It is not often that BBC local radio mentions intellectual property which is why the post on the "Made in Sheffield" trade mark on Radio Sheffield's website attracted my attention.
The people behind "Made in Sheffield" appear to be these worthies.
I have found their design registration but not their trade mark on the IP Office website.
Incidentally the above-mentioned worthies did not show up at the top of a Google search for "made + in + Sheffield". There seem to be some folk in Broomhall called MadeInSheffield Dot Com Ltd. who claim the made in Sheffield brand. Do they know of each other's existence? Who was first? I wonder.