Cleaning Big Ben in the 1980s wasn't for the faint of heart. Workers suspended high above London relied on just ropes and a brave spirit, with minimal safety equipment. https://t.co/sicTP9ggao https://video.twimg.com/ext_tw_video/1843353265225826304/pu/vid/avc1/592x448/lkBSdhbad3HtG2nT.mp4?tag=12