After more than a decade of fierce debate, High Speed 2 was granted its Government ‘Notice to Proceed’ on April 15 - and work is under way at around 250 sites. But has COVID-19 changed the fundamentals? Do we even still need HS2? And if we do, do we need all of it? Is the Eastern Arm safe? Can we still afford it? Is it still on budget? NIGEL HARRIS talks frankly to HS2 Chief Executive MARK THURSTON about all these things - and much more….