... as the track would likely have been relaid due to heavy usage between 1866 and before the junction was completely revised in 1907. Pre-grouping trackwork is a sadly neglected area, but will always remain very mysterious, I suspect. Fully agree, and the photos of Holborn viaduct show some pretty tight formations there also. I agree about pre-grouping track and the drift towards today's monotony started about 1923!! Just for completeness, here is a pic which compares my box file with the scan from "The Engineer" 1129_090857_510000000.png...not spot on, but surprisingly not too far out. Cheers, Howard posted: 9 Feb 2014 14:48 from: Ariels Girdle Looking at your original .box file, some of those curves are very tight, to say the plan is more or less to scale. The design of the real thing must have caused a lot of head scratching. There are locking bars and other paraphernalia to fit in too. Presumably, knowing the LCDR, it was all done down to a budget. Get your date right ...