Kate meets Andrew McNaughton, the man who, in 2009, was given the task of sitting down with a blank piece of paper and designing a new high speed rail line. Ministers across the political aisle were aware of the desperate need for a capacity boost on the creaking West Coast Mainline; and looking for a jolt of optimism in the wake of the financial crash. It was the first new line north of London in over 70 years, and Andrew was venturing out into uncharted territory; he set out to design a futureproof, ambitious solution that would be the envy of the world.