At one point, Ahir Shah pauses and gives a wry grin: “If you watched Rishi Sunak’s Conservative conference speech you might recognise some of this. One of his speech writers came to see this show in Edinburgh.” Sunak stole well – Shah’s remarkable Edinburgh award-winning show is more than an hour of stand-up; it captures something vital about this country. Shah tells his grandparents’ immigrant story, an exceptional tale of courage and sacrifice by people who considered themselves unexceptional. It’s part of most immigrant families’ experience of arriving here, including the prime minister. This is a rare comedy show that can summon sobbing and laughter just a few seconds apart. The most important stand-up of the year, if not decade.