The last stock market crash occurred in spring 2020, when investors around the world were knocked for six by the arrival of Covid-19. But as well as reminding us to expect the unexpected, the pandemic also taught us the benefits of long-term investing. Just take a look how at this FTSE 100 stock's rebounded since those dark days of six years ago. That's a remarkable recovery and shows the potential rewards on offer to a brave investor with some spare cash. Or maybe, they are concerned that the country's new Prime Minister could impose a windfall tax to help fund more government spending?