The world is not lacking for inexpensive kitchen knife sets—they’ve long been a staple of late-night infomercials and homeware bargain bins alike—but top-quality cutlery is much harder to come by.

Blenheim Forge is a steel workshop in Peckham, London. They create a range of traditional hand-forged kitchen knives. Each knife is made entirely in-house; the blade is first laminated and folded ...