The constrained jurisdiction of railway, dock and canal (RDC) police has always been a problem. It still is. A particularly difficult example can be found in the experience of Pc Wilfred LUCAS of the Midland Railway Police, Nottingham. One night in late Spring 1903 Pc LUCAS was on duty at the station when he was approached by a member of the public telling him that nearby a woman was calling for help saying that she had been assaulted by her husband and that he had threatened to murder her and their children. At first he, correctly, pointed out that this was a matter for the City Police and that he had no jurisdiction. Bystanders pleaded with him, fearful for the life of the victim. He therefore made his way the short distance to the address in question. As he was alone two railway staff came to assist. On his arrival the officer spoke to witnesses and gained access to the house via a window where he arrested the suspect, a...