yep, theyre not even for Preston, but the whole of lancashireSurely its lancashire county council asking as it is they who are responsible for highways.
I've read something similar. Nits = headlice. Grits = American type of cornmeal.
But I'm not sure how concrete the slave ships link is though?
I've nicked this from online, can't take credit but it is quite wonderful:
Gritsy Bitsy Teeny Weeny Yellow Anti Slip Machinery!