‘Brexit means Brexit” says the prime minister — but what, exactly does Brexit mean to her?

For those who voted Brexit it means leaving the EU, resulting in the return of the UK’s sovereign powers of government and restored control of Britain’s borders.

Brexiteers were alarmed that Theresa May was a Remainer, albeit a tepid one, and initially took some comfort from her “Brexit is Brexit” declaration, which signalled that the vote to leave was inviolable. Yet that allowed much scope for mischief.

While unsustainable immigration levels are fuelled by global pressures, Britain can’t control immigration policy while subject to the EU rule giving citizens of one member state the right to live and work in any other. The EU insists, however, there can be