North Riding of Yorkshire Constabulary
Formed in 1856 as a result of the County and Borough Police Act 1856 it covered all of the North Riding except for the boroughs of Middlesbrough , Richmond and Scarborough , which had their own Borough Constabularies . 
<triplet> County and Borough Police Act 1856 <subj> 1856 <obj> publication date <subj> 1856 <obj> publication date