njrick:
Here in the US of A I have occasionally heard the term "scut work" in the same sense that my friend blimp describes, meaning a dirty job.
I'd heard it as meaning more like tedious or boring rather than dirty, but a quick glance at the dictionary shows that all are correct:
Scut Work (noun) : trivial, unrewarding, menial, dirty, tedious, unfulfilling chores.
njrick:
I suppose that people who do such jobs could be perceived (rightly or wrongly) as now accounts who might be law breakers, leading to that meaning for the word scutter.
Possibly, either law breakers or just "low class," like the common insult in the South for people living in a double-wide is "Trailer Park Trash."