The unforgivable crime is the way it wraps round and crushes the lovely Wren spire of St Magnus next door.
Even the allegorical stone figure over the entrance seems wrapt in gloom. She holds a globe with a band of astrological signs in her hands, as if contemplating a future London full of buildings like Adelaide House.
The lady was carved by Sir William Reid Dick, and seems to have been chiselled directly out of the wall - see how the joints run through the wall and the figure.