Hi Calidore that's great. I've got a few photos of the Farringdon shed. I put a separate post on here a few months ago (before I'd seen your model). Other members replied, also quoting a book on the North Cornwall line which I've since ordered through Abe books. I've since seen plans in the book on the internet, and the north Cornwall one although generally similar, seems to have been built out of something more substantial (stone or brick?). It was difficult to see as the plans were small on the internet. Based on the photos I've seen of Farringdon I agree that it appears to be taller than the N Cornwall structures - it's good that you captured this in your model. Thanks for confirming that all of the walls (and not just the roof) of the prototype were corrugated. Looking out for future posts if time permits you to return to this model......Thank you.