Finally, some good news on UK productivity growth. An expansion of 0.8% in 2017 Q4, coming on the back of a 0.9% pick-up in the previous quarter, topped the strongest six-month growth period since before the Global Financial Crisis (GFC). It has been a long time coming. The UK has lagged its counterparts on productivity for decades, but has fallen further behind since the GFC. So is this a new dawn, or a false one? And why does it matter?