There are an estimated 11,700+ people trapped in forms of modern slavery in the UK. These are just the people who have been noticed: many would say that the figure is vastly greater. Slavery is largely unreported because of the difficulty and expense of regulating small businesses using casual staff. On 11 June a free-to-use smartphone app, commissioned by the Church of England, will help shed light on the true extent of forced labour across the UK by ‘noticing the unnoticed’ among people and businesses in the parish, starting with car washes. The app will ask users to complete a short questionnaire on local car washes to ensure that the business is legitimate and meets employment regulations. If the car wash appears to indicate signs of forced-labour exploitation, the user will be prompted to report the business to the Modern Slavery Helpline (08000 121 700).