Watching Andrew Flintoff command the stage at the Victoria Palace Theatre, a place that on every evening except this hosts the musical Hamilton, is at once soothing and startling. We are, after all, not even three years removed from his Top Gear crash and facial injuries so severe he could not leave his house for eight months. Jahrad Haq, who operated on him, ranked it among the five most complex cases he had seen in 20 years as a trauma surgeon.