Sitting in the living room of a Salvation Army safe house in Cambridgeshire, Rose looks like a regular 20-something. Her clothes and friendly smile tell little of the four-year ordeal that brought her from Nigeria to this refuge. She says her dreams of a new life in Britain became a nightmare of punishing work, physical assault and rape. She is nervous to tell her story, but wants people to understand the reality of modern slavery in the UK – a crime hiding in plain sight.