Well the sign gives you a big hint - its a Distillery. As to who makes/made it, that is the real question of coarse. But, maybe a search through Walter with a tag 'distillery' might yield results. If I find the time, I'm on.
The factory (building #10) and the ruined chimney/small building are 'Hovels UK' resin products from their 15mm 'Battleground' WWII European line: 5B5 and 9B5 respectively. (6B5 is the intact chimney building.) I have several Hovels 15mm Waterloo era buildings for use in FoW WWII Normandy war games as farms, and the famous 'La Belle Alliance' inn as, well, a country inn. Very nice models. The larger ones have removable roofs - 5B5 has two.