This evening I went to use the space and there was a large amount of broken glass from a florescent lighting tube which had been left lying around and subsequently been smashed.
Broken glass is a safety issue: please clear up breakages promptly. This may also have been avoided if the metal work space had been left in a tidier state - please don’t use this as a dumping ground.
On a related topic - @woodworkers : it may have crossed your mind that we can actually tell who has been using tools without the extraction on or clearing up after themselves, because the offcuts from your projects are left all over the place.
Please make the effort to keep dust down by turning on the extraction and clearing up after yourselves: offcuts belong in the relevant bin.