A Derbyshire-based startup which appeared on Dragons鈥� Den back in January has seen record growth in the past nine months.聽
Since appearing on the BBC show, Mystery Jersey King founder Alex Street has seen his online business skyrocket, with sales more than doubling and growth hitting record levels.
The company gives customers an authentic jersey at random, often from top leagues and clubs around the world.
Since January 2025, the business has seen dramatic growth, with website traffic up 66%, revenue up 164% and orders up 165%.
鈥淭he show proved that Mystery Jersey King is both authentic and high-quality, and the credibility of Dragons鈥� Den gave me the confidence to fully believe in myself as an entrepreneur,鈥� said Street.聽
鈥淲e鈥檙e growing, we鈥檙e confident, and we鈥檙e ready for what鈥檚 next.聽
鈥淒ragons鈥� Den was a life-changing experience, and I wouldn鈥檛 change a thing.鈥�
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Since the episode aired, the business has partnered with leading manufacturers and brands, launched exclusive activations and free gift incentives, and secured high-profile endorsements from celebrities and athletes including KSI, darts star Luke Littler and England Lioness, Chloe Kelly.聽
Street has credited much of the company鈥檚 rapid progress to Dragon and Northern Leader Sara Davies.聽
He added: 鈥淪ara is creative, operationally sharp, and full of blinding ideas.聽
鈥淪he鈥檚 helped us refine our strategy, introduce systems that improve customer experience and scale the business as we prepare for the American World Cup.鈥�
Expanding the product range, Mystery Jersey King has launched share boxes for groups and stag dos, a retro outlet offering vintage investment shirts, as well as exclusive gifts, including cards and scarves.