This category covers any business that does not come under the Leisure, Pubs, or Industrial sections. In the last few years and especially since the great recession of 2009, many businesses have gone under.
In some cases, they close down and leave all their crap behind. While they are not quite as accessible as Mills due to their locations within towns and cities, one can find some goodies within.
Some of the more rundown cities such as Bradford, West Yorkshire host some great failed businesses. You just have to find them and be sure that they are abandoned. Government Buildings included Council, Fire Stations and Police Stations,
I would say be extra careful if you ever intend and explore this type of location. You don’t want to be mistaken for a thief, so do leave the crowbar at home.