The quake was a 5.2 - which on the scale of things is quite small. For the UK its got the seimology scientists happy. To put it into perspective that last quake that was bigger occured in 1984, which measured 5.4. I vaguely remember that one but the last one I remember was in 2002.
I expect the media (especially the 'tabloid' type media) to be doing the 'world is ending' type stories. I'm keeping to the BBC stories - they'll give it a lot of coverage but at least its balanced.