Strictly Come Dancing host Tess Daly has revealed only her mum calls her by her real name after her agent changed it at the start of her career. The telly star was born Helen Daly and started her career as a teenage model.However, her agent discovered there was already a model on the books of her agency with the same name, so she had to change it.Tess revealed her agent picked the name Tess for her and now her mum is the only person who still calls her Helen.