According to initial evidence collected following the incident, the aircraft struck the roof of The Clutha Bar with “a high rate of descent and low/negligible forward speed” without rotation of the main rotor or the Fenestron tail rotor. As previously reported, all rotor blades remained attached upon impact.
The helicopter fuel tank system contained approximately 95 liters of fuel at impact.
That's an interesting statement from EC, can't see them saying "95 liters of fuel at impact unless they were certain!