If you have lived in London for a long time, then you’re used to seeing scaffolds surrounding commercial buildings in the city. These are necessary in order to perform simple tasks to the exterior of these buildings, such as window washing, painting, siding repairs, utility installations/repairs, and roofing repairs....

When you travel around London, you’ll frequently see maintenance workers on the outside of tall buildings doing various handyman tasks, such as painting, repairs, roofing, utility work, washing windows and so on. The platform on the outside in which they’re standing on is called a scaffold. You’ll normally see...