An appearance on the business show, Dragon’s Den, has helped boost the sales of one entrepreneur’s product. Founder of the device, Craig Knott suggested that despite leaving the show with no investment on his Patlock product, sales had grown significantly in the aftermath of the episode’s broadcast. In response to the show’s airing, Knott stated that “getting the opportunity to beam the product directly into people’s front rooms was a once in a lifetime opportunity and it’s had an enormously positive impact on the business”