Everything you need to know about Silicon Roundabout in 10 links
vccafe.com
vccafe.com
This article is mostly bullshit and certainly doesn't "help grasp what Tech City UK is all about", notably:
"which started as a government effort to rejuvenate East London" is laughably incorrect. Silicon Roundabout was a jokey term coined (by Matt Biddulph) to describe a bunch of companies working and socialising in the area. That was a few years ago, since then it's become a big PR thing for local companies (mostly co-working spaces) and now government.
Sure, there's tech growth, but an much is from pre-existing companies and people. Gov involvement has brought some attention to the area, but also a lot of sycophants and opportunists.
Another good skeptical read: gigaom.com/2011/11/11/is-london-tech-citys-phenomenal-growth-just-spin/
Interactive map – all companies and startups operating in East London