John Smedley Review: The World's Oldest Knitwear Factory
Lea Mills in Derbyshire has been making knitwear since 1784. Not the brand — the actual building. John Smedley operates from the world's oldest continuously running knitwear factory, still on its original site after 242 years.
Eight generations of the Smedley family have overseen production. 300 skilled craftspeople work the factory floor today. And every garment that leaves the mill carries a heritage that predates the French Revolution.
The Heritage
John Smedley founded the company in the Derwent Valley — the same stretch of Derbyshire that gave birth to the Industrial Revolution. Richard Arkwright's Cromford Mill, the world's first successful water-powered cotton spinning mill, sits just upstream.
But where most of the Derwent Valley's mills have become museums, John Smedley is still a working factory. The combination of soft Derbyshire water (ideal for processing natural fibres) and generations of accumulated skill has kept the operation viable where others have closed.
The company has survived two World Wars (producing military knits for both), multiple recessions, and the collapse of Britain's textile industry. It remains family-owned and stubbornly committed to making everything on-site.
The Craft
John Smedley specialises in fine gauge knitwear — the thinnest, most precise knitting achievable. Their signature 30-gauge knit (30 needles per inch) produces a fabric so fine it's often mistaken for woven cloth.
Each garment takes approximately:
- 1.5 kilometres of yarn
- 1.2 million individual stitches
- Multiple days from raw yarn to finished piece
The process:
- Yarn selection — John Smedley sources Sea Island cotton (the world's rarest cotton, from the Caribbean) and New Zealand Merino wool
- Knitting — Computer-controlled machines execute patterns designed in-house, but human operators monitor every panel for defects
- Linking — Panels are joined by hand on linking machines — a skilled trade that's increasingly rare
- Washing — Garments are washed in the soft Derbyshire water, which gives them their characteristic drape
- Pressing and finishing — Each piece is hand-pressed and inspected before packing
The Product Range
John Smedley's range covers year-round wardrobe essentials:
- Polo Shirts — Their best-known category, in Sea Island cotton
- Crew & V-Neck Jumpers — Fine gauge Merino wool, available in 50+ colours
- Cardigans — Classic and contemporary silhouettes
- T-Shirts — Sea Island cotton, impossibly smooth
Prices sit in the contemporary luxury bracket — £120-200 for knitwear, £80-150 for cotton polo shirts. For machine-knitted garments, that's premium. But the quality of the yarn and the fineness of the gauge justify it.
The Verdict
John Smedley is a quiet giant. No flashy marketing, no celebrity collaborations, no Instagram hype. Just 242 years of making knitwear in the same valley, in the same building, with the same commitment to fine gauge quality.
The factory is a living testament to what British textile manufacturing can achieve when it refuses to compromise on location, materials, or method.
Pros:
- World's oldest knitwear factory, still on original site
- Exceptional yarn quality (Sea Island cotton, New Zealand Merino)
- 30-gauge knitting — finer than most competitors can achieve
- Family-owned, 8th generation
Cons:
- Premium pricing for knitwear
- Styling can lean conservative (though modernising)
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