Incredible shots show roof topper conquering London heights

These jaw-dropping shots show rooftopper Alexander Farrell perched on top of towering London skyscrapers. While so-called rooftopping, which is the practice of climbing skyscrapers and taking daring selfies in precarious positions, often results in shots that may be dizzying for many, Alexander says there's a sense of achievement that makes it worth it. (Cater News)