
Brexit creates significant new challenges for the British left. It torpedoes some great gains, making discretionary various social, political, economic and environmental rights that have become mandatory over the past two generations. And it creates a whole new series of traps for progressive politics.
But Brexit also reflects the weakness of the left in the UK. In fact, Brexit was only possible because of Labour’s shift over the past ten years from a powerful governing majority to a secondary influence on national decision-making. The future of the left is about more than Labour, and about more than parliamentary representation, but only if we understand this shift can the challenges of Brexit be addressed.