I spoke to someone who is involved in the Mens Sheds organisation. I know nothing about them but there are a few in and around Edinburgh, that may give you access to a workshop.
What about adult woodworking courses. Very many years ago, in the depths of winter I did a metalworking course, I was building a trailer, used their machines to cut all the parts, they even let me take my own (borrowed) arc welder in to weld some of the parts, but that was in the mid seventies, no doubt the rules would not allow that. Still have the trailer.