As part of the preparations for this, Mr Jones called for the appointment of a Welsh member of the Supreme Court.

BBC: Wales politics

In October the Welsh Rugby Union took the dramatic step of taking its own regions to the High Court to ensure the early release of Welsh players to prepare for their autumn Test against South Africa on 8 November.

BBC: Wales release prop for Sale duty

Last year the Supreme Court ruled in the Welsh government's favour when the UK government claimed a piece of legislation to reform local bylaws went beyond the assembly's powers.

BBC: Plaid Cymru wants more powerful assembly 'without delay'