If you were drinking coffee outside Throwing Buns this week, you’d have overheard the theories about the rope-dangling antics above the County Hall Museum. Are they human pigeon scarers, a new art installation, rehearsals for ‘Strictly Come Dangling’ or what?.

More likely, they are inspecting the stone façade up close, checking the carvings and mortar.

One of their tools looks like a moisture meter for detecting damp within the stone and mortar, finding any problems before time and weather can do more harm.