Undercover Mosque is a documentary from British Television Channel 4 programme Dispatches which aired on 15 January 2007 in the UK. The film caused a furor in Britain and the world press due to the content of the released footage. The documentary presents film footage gathered from 12 months of secret investigation into mosques throughout Britain. West Midlands Police investigated whether criminal offences had been committed by those teaching or preaching at the Mosques and other establishments and found that there had been insufficient evidence to bring charges against anyone featured in the documentary.