It is now 20 years since powers were devolved from Whitehall and Westminster to new legislative and executive bodies in Scotland, Wales and Northern Ireland. In that time, devolution has evolved significantly, radically changing the relationship between different parts of the UK. Meanwhile, in England, attempts to devolve powers from the centre to the regions have had only limited effect. John Cooper looks at the state of devolution in the UK today, the impact of Brexit, and whether there is any future for English devolution.