knacker's yard

CXXV. The Commissioners may license such slaughter-house and knacker's yards as they from time to time think proper for slaughtering cattle within the limits of the special Act. CXXVI. No place shall be used or occupied as a slaughter-house or knacker's yard within the said limits which was not in such use and occupation at the time of the passing of the special Act, …

I’ve never met someone so incompetent. He’s only fit for the knacker’s yard.