A blog I have recently come across is The Bohemian Blog Urbex site, run by a guy called Darmon Richter. This blog has features mostly based around Urban Exploration of abandoned and derelict sites across the whole world.
I found Darmon’s blog after searching for Bristol urbex reports and found an article about when it all goes wrong. The story is about some guys who had to be rescued from some caves underneath the Bristol suspension bridge (here is the link).
There are loads of other decent sites on Urbex worth having a look at, like ’28 days later’ and ‘UK Urbex’. Check out Darmon’s site at: http://www.thebohemianblog.com/about/the-travel-blog