This rather handy diagram came from Politics Home and was published before the May first elections as a way to gauge the relative success or failure of the three main parties:
In order to read it accurately you have to remember that the Conservatives gained 256 Councillors, Labour lost 331 and the Liberal Democrats gained 34.
Updated: The latest numbers are Conservatives gained 300 and Labour lost 434(!). Given these seats were last fought at the height of the Iraq debacle then this is extraordinary. The language in the Sundays will be interesting.