Undercover Mosque is a documentary programme produced by the British independent television company Hardcash Productions for the Channel 4 series Dispatches that was first broadcast on 15 January 2007 in the UK. The documentary presents video footage gathered from 12 months of secret investigation into mosques throughout Britain. The documentary caused a furore in Britain and the world press due to the extremist content of the released footage. West Midlands Police investigated whether criminal offences had been committed by those teaching or preaching at the Mosques and other establishments.