Sarah Tilotta/CNN People walk into Oxford Circus Underground Station. Using public transportation again is one of the activities Brits are most anxious about By Eliza Mackintosh Photographs by Sarah Tilotta In May, as the United Kingdom began to emerge from one of the world’s longest and most stringent lockdowns, Kitty Grew started doing dry-runs of the commute from her home in north London to her office five miles away. Most evenings now, after logging off and closing her laptop, the 27-year-old unfolds her red Brompton bicycle, puts on her helmet and sets off down a suburban lane of terraced houses toward the city.