Award-winning Scottish author and editor at large at the ‘London Review of Books’, Andrew O’Hagan has spent the past decade working on his state-of-the-nation novel, ‘Caledonian Road’. Employing the traditions of Victorian writing, his research took him to the homes of Russian oligarchs, the Old Bailey and even a ship from Venice to Trieste. Here, O’Hagan talks about how libraries “saved” him, ghostwriting Julian Assange’s autobiography and his brief brushes with royalty.