There was a programme on C4 recently called The london Blitz and its as though the rest of the country didnt get bombed!
Also, there was a great documentary made during the war about the Blitz which was originally called London Can Take It but so many people complained it was renamed Britain Can Take It.
Anyway lots of other towns and cities were very badly hit although not in the sustained way London was. Hull suffered badly, as did Sheffield Manchester and Liverpool.
Whole families were wiped out with sometimes three generations of the same familylosing their lives.
Unlike the south east the north had no air cover from the RAF and there was real unease about this in the north (hushed up at the time obviously) and the authorites were genuinely worried that civil unrest would boil over in to full scale mutiny.
If you go to places like Coventry, Portsmouth and Exeter you just have to look at how many post war buildings there are to see how much damage was done.
To add insult to injury near the end of the war the Germans began using the V weapons which had a great range and which were equally as indiscriminate and deadly as bombers.
A couple of links:
http://www.liverpoolmuseums.org.uk/maritime/ex hibitions/blitz/may.asp
http://www.24hourmuseum.org.uk/manchester/loca l/TRA27952.html
http://www.24hourmuseum.org.uk/liverpool/local /TRA28260.html?ixsid=ipu80wgY__X