We have some extreme challenge that devolution needs to address.
The morning after Scotland voted to stay part of the UK, Mr Cameron insisted that Scottish devolution needed to proceed "in tandem" with an English-votes-for-English-laws reform of Westminster.
Baroness Jenny Randerson also said the model of Welsh devolution needs to be rewritten as it is "overly complex".
His administration's submission to the Silk Commission, which is looking at the scope of the Welsh Assembly's remit, says devolution needed to be "restructured".
Since then, in the wake of devolution, the need to tackle health inequalities has been highlighted as a policy priority in all three mainland UK countries, albeit with varying degrees of emphasis.
In Northern Ireland, devolution was needed for a different reason - to enable the communities of a divided society to share power and to work together to build a common future.
– Jonathan Carr-West, chiexecutiveive of thinktank LGiU LGA (Labour group): "Meaningful devolution is needed, without strings attached" "The devolution for greater collaboration on employment programmes, children's services and a new land commission to Greater Manchester are welcome, but other parts of the country should not miss out.
The Welsh government said it shows the devolution settlement needs reform.
"We do need devolution but this model will totally forget the real fundamental challenges that the NHS faces," he said, "The real problem is about the prevention of lifestyle diseases, the diet-related diseases – there's nothing [in these plans] as far as that is concerned".
If we are to turn that into a reality we need real devolution, including fiscal devolution, to enable us to bring about a step change in the City Region's economy.
