The 7 July 2005 London bombings were a series of co-ordinated bomb attacks , including an explosion in a Piccadilly line train travelling between King 's Cross St Pancras and Russell Square which killed 26 people . The death toll was the highest of all the incidents , as the Piccadilly line is in a deep tube south of King 's Cross and there was nowhere for the blast to escape
7 July 2005 London bombings
7 July 2005 London bombings
King's Cross St Pancras tube station