The committee takes Gordon Brown severely to task for not including in Sir Peter 's remit the central question raised by Panorama and the " one remaining substantial question " outlined in its report : Why neither the intercepts , nor even the telephone numbers of the bombers were ever disclosed to the detectives even though the intelligence services including the special branch knew they were trawling through 6.4 million billing records having worked out for themselves that mobiles must have been used on the bomb run ?