Operation Crevice was a raid launched by Metropolitan and local police in England on the morning of 30 March 2004. It was in response to a report indicating cells of terrorists of Pakistani origin operating in the Thames Valley, Sussex, Surrey and Bedfordshire areas, the source of which was said to be an interception of an instruction sent from Al-Qaeda leaders in Pakistan to militants in Britain. The operation resulted in five men being found guilty in April 2007 of conspiring to cause explosions likely to endanger life.
A number of arrests were made, and 1,300 pounds (600 kg) of [[ammonium nitrate fertilizer, which can be used to make bombs, were confiscated. The chemical was seized in a storage space in Hanwell in west London.
At least six homes in Langley Green, Crawley, were searched, and an area was excavated at one site. A biscuit tin filled with aluminium powder, another potential bomb ingredient, was recovered behind a garden shed.
The arrest of software engineer Momin Khawaja on 29 March 2004, in Ottawa, Canada, was reportedly related to Operation Crevice. He was reportedly experimenting with remote-controlled detonators.
The court case against the men began in March 2006 and lasted till April 30, 2007. The jury was out for 27 days. The accused were named as:
Mohammad Momin Khawaja, in life imprisonment in Canada, is the eighth man charged of being involve in the plot. A ninth man, Mohammed Junaid Babar is the prosecution's star witness. An alleged leader of this group was a man named Mohammed Quayyum Khan who was an alleged associate of both Abu Hamza & Omar Bakri. Mohammed Quayyum Khan [or "Q" as he was called by the group & the courts] is apparently still at large after the police, inexplicably, failed to arrest him. British Intelligence Services have also still not announced the links between the accused & the 7/7 bombers even though photographic evidence was leaked to the daily newspapers showing members of this gang with two of the future suicide bombers.