I was on the tour that went from London Kings Cross Station to Barrow Hill Roundhouse for the Preview of its forthcoming "Grand Reopening Weekend". This was on Thursday 21st September 2017. Because the weather was not kind during our limited visit, the outside photography was rather hurried. (17 Photos).
A larger image, with a caption, can be viewed by left clicking on a photograph below. Then the collection can be navigated through.