20 British Manufacturers Behind Marks & Spencer Brands — The Names Customers Never Knew

0:00 The hidden factories behind St Michael
1:15 Corah and Leicester’s knitwear legacy
5:07 The sourcing shift that changed British manufacturing
14:17 One customer’s control and the hidden factory codes
23:51 How Marks and Spencer designed every detail
34:11 The collapse of Britain’s clothing industry
37:55 Courtaulds Textiles and the biggest supplier
40:13 The factory story behind every label

I uncover the hidden British manufacturers behind Marks and Spencer brands and reveal who actually made the clothes, shoes, towels, pies, salads, cakes, and chilled foods sold under the St Michael label.

I trace the stories of twenty companies, from Corah and K Shoes to William Baird, Pretty Polly, Dewhirst, and Courtaulds Textiles, showing how their fortunes depended on one powerful retailer. I also examine the overseas sourcing shift that changed British manufacturing and the factory codes hidden inside many labels.

I finish with the human cost of those decisions, from silent knitting machines and closed Welsh factories to the collapse of major industrial groups. The name on the front of the label was only part of the story—the factory behind it mattered just as much.