The devolution settlement drawn up by Tony Blair will no longer be fit for purpose after Brexit, a report says.

The Institute for Government calls on ministers to accept that the relationships between Westminster and devolved institutions need to be rethought as powers are returned from Brussels to the UK.

Ministers have already said that there are about 153 areas of policy decided by the EU at present which would be hard to devolve to Edinburgh, Cardiff and Belfast. The devolved administrations want these powers to return to their capitals but Westminster is resisting, arguing that it needs to guarantee continuity and certainty.

The think tank’s report says: “The four nations must strike a careful balance. For the UK government, centralising control has potential