Islam strictly, strongly and severely condemns the use of violence and the destruction of innocent lives.
There is neither place nor justification in Islam for extremism, fanaticism or terrorism. Suicide bombings, which killed and injured innocent people in London, are haram--vehemently prohibited in Islam, and those who committed these barbaric acts in London are criminals not martyrs.
Such acts, as perpetrated in London, are crimes against all of humanity and contrary to the teachings of Islam.
Islam's position is clear and unequivocal: murder of one soul is the murder of the whole of humanity; he who shows no respect for human life is an enemy of humanity.