James Kynoch was six when he discovered the man he called `dad' was not his real father, his parents having divorced when he was just two. After years of getting no answers, he needs to finally find the man who last saw him as a toddler. Scarborough woman Lisa Nortcliff, 48, also asks for help to solve the mystery of her father. When she was 10, she discovered the woman she thought of as her older sister was actually her mother, and that her dad had been forbidden from seeing her once the pregnancy was discovered. She has spent years searching for this mystery man but is no closer to finding him. Davina McCall and Nicky Campbell aim to succeed where she has failed.

• Nicky Campbell
• Davina McCall