From Chris:
Well, after the noisiest night down on the railway line below us so far, through which even I, who don’t have a problem with extraneous noise at night, found it difficult to sleep for more than a few minutes at a time, I was eager to see what it was the blokes were doing all night that could make all that racket.  The results are attached – and I guess that, snug inside all that massive shuttering, resides a spanking new, fully reinforced parapet wall, guaranteed to withstand the forces of Nature for generations (hopefully!)