My historical centre of gravity, so to speak, is the 1890s, and has involved research into the London Metropolitan Police; so I’ve been a keen watcher of Ripper Street on BBC2, starring Matthew Macfadyen as Inspector Reid, a fictional detective in Whitechapel around then. It takes a strong stomach to watch it; but historically it’s pretty accurate, despite the occasional (unsurprising) anachronism. This week’s episode centred on the Thames Ironworks factory in the East End; and in particular its football team. Thames Ironworks FC was the original name of West Ham United, a.k.a. the Hammers or the Irons. I've followed them for decades. On Monday night, we saw them playing, convincingly (i.e. roughly but skilfully), in late-19th-century strip. The plot involves the murder of one of the star players – with a hammer. It also features the Arsenal. But I don’t want to give too much away.