What used to be a fairly niche industry is now on the increase, with companies setting up removal clinics around the world. And no surprise – as more people get tattoos, more people night change their minds and want them removing. We meet the regretful clients and the companies cashing in, and also explore the world of cosmetic and medical tattooing.Presenter and producer: Elizabeth Hotson(Image: A laser tattoo removal. Credit: Getty Images)