In just five months, Britain will be out of the European Union. But on what basis, and under whose leadership? And could it yet not happen? Brexit uncertainty is coursing through the veins of British politics leaving little room for anything else. The governing Conservative party is deeply divided, as is the Labour opposition. HARDtalk’s Stephen Sackur speaks to David Lammy - a prominent Labour advocate of another referendum on any final Brexit deal. But how would that help Britain move beyond its Brexit breakdown?Image: David Lammy (Credit: UK Parliament)