Which Dragons' Den investor was associated with the Ryman stationery chain?

Theo Paphitis was associated with the Ryman stationery chain.

Paphitis is a British retail entrepreneur who acquired and developed Ryman, a chain specialising in stationery, office supplies and related products. His retail background became a defining part of his public identity when he joined the original Dragons' Den investor panel.

On the programme, he was known for testing whether a product could be sold successfully, not merely whether it was inventive. That perspective reflected his experience in stores, merchandising and consumer retail.

Ryman is sometimes confused with Paphitis’s other retail interests, including lingerie and homewares businesses. The question asks specifically about the stationery chain, for which Ryman is the canonical name.