The Bill also outlines a mechanism whereby primary powers can be transferred on a case by case basis by orders in council.

BBC: NEWS | Programmes | Politics Show | Wales: Assembly powers

Tax-raising powers would not be possible for the Welsh Assembly unless it was given primary legislative powers at some point in the future, it said.

BBC: Funding rules 'unfair to England'

Lord Griffiths called for primary law-making powers and for a formal separation of powers between the executive (the assembly government) and the legislature (the assembly).

BBC: Increase assembly's power, says peer