We frequently have to fit cramps to stabilise masonry features such as this decorative gable finial stone.
In case you don’t already know, cramps are shaped lengths of stainless steel that secure one stone to it’s neighbour very securely. They are used when rebuilding all the stones is considered too expensive an option, and they are very effective.
No scaffold was necessary here. As you can see we are using abseil gear for access to the outside wall. Access to the roof was gained by erecting steeplejack ladders straight up the wall below.