@nooby
As you have pointed out there is lamp post right outside the front door of the pub that is very nearly within the rotor disc of a level E135 if it were parked normally in that position. There is no impact damage to this lamp post in any of the photos.
Likewise the is no damage to the roof behind the aircraft.
On the other hand.... You can see here the remains of the 4 rotor blades. While 2 have been cleanly cut by the Fire Brigade the other 2 have suffered impact damage such that the blade roots have sheared. Given that all wreckage is confined to the immediate scene the it must be presumed that the damage to these blades occurred there. An impact such as is evidenced by the final resting place of the airframe would see the 2 blades passing ahead of the aircraft striking the roof about the same time as the aircraft nose at around 30deg ND. The other blade roots are not damaged in the same way indicating that the Nr was low at the moment of impact. Had the Nr been normal the rotor disc would have had enough momentum to shear off all four blades in one go
Had the impact take place in a flat attitude I would have expected to see the tail distorted earthward relative to the fuselage. The is no evidence of this in any photograph.