Mr Qadir's bodyguards did little to prevent the attack.
The warning did not prevent the attack, which killed 241 US and 58 French personnel.
No information assessed by government departments contained sufficient detail to identify or prevent the attack".
If the Syrian police state is all-powerful, why did it not prevent the attack?
The killers escaped, and the police detained 10 government guards for failing to prevent the attack or chase his assailants.
Though he said unnamed measures were taken, the company was unable to prevent the attack, which hit at 5 a.m.
But overall there was little that the two agencies could have done to prevent the attack, the report says.
"There is then a significant possibility that MI5 would have been able to prevent the attack," the report says.
Mr. Lee says that the nightclub and its owner did not do enough to prevent the attack.
The court is yet to rule on charges against 19 policemen, who have been accused of failing in their duty to prevent the attack.
The dossier on the case is being passed to a parliamentary committee charged with investigating whether more could have been done to prevent the attack.
