I really like those. Although some of the too intensive shining gets me thinking of the "abstract" or not documentary real photography. That it does not actually exist, but I do love the one of just the scrappy station as it is so real in London.
My experimenting with subway was this series few months back:
http://www.yukaii.com/data/blog_pics...irst-draft.jpg (a bit small, but you should get the series.)