Wales had a "lop-sided" system of devolution, with law-making powers granted by a referendum in March, but far less power over its finances.

BBC: Welsh assembly's 'new power after Scots independence'

The devolution law hands the regions many of the central government's former responsibilities, like health care, education and public works, but only a quarter of its revenue.

ECONOMIST: Devolution isn't working as planned

This process, known as devolution, would effectively transfer a whole swathe of law making and administrative powers from Westminster to the Scottish Parliament and Scottish Executive.

BBC: Devolution in Scotland