Citizens Advice have produced a report - 'Responsive Welfare' that suggests a number of actions that an incoming government could take to improve the social welfare system. Some of them include decentralising welfare provision to city regions. I don't agree with all of the analysis here - nonetheless it raises an important debate. Not least, because local authorities are increasingly concerned with how they can best respond to the needs of the most vulnerable and easily ignored members of their communities.
There is more detail on my blog here