Plot: Syrian refugees Razan and Raghid Sandouk bring their British-made alternative to Cypriot halloumi to the Den, but will the Dragons think it is a tasty proposition? Breezing into the Den are partners in business and life Richard and Samantha, with their cutting-edge virus filtration gadgets. And Joe Metcalfe is hoping for a hand out from the Dragons with his charity-meets-commerce clothing business