Often the most charming aspect of a factory is the way its industrial environment has been altered by the employees. Usually that amounts to no more than photos of children on desks, or the scores of the five-a-side competition on the pinboard. The most creative add real character, however, like these drawings done on the benches at the Mackintosh factory in Cumbernauld.

One of the workers, who fancies himself a bit of an artist, drew all his tips for creating the perfect mac onto the wood several years ago, so they would remain there for future occupants. Unfortunately Mackintosh are moving out next year, after 50 years in the same building – but for the moment, it is a helpful source of hints and tips.