Looking at the map of the crash site posted on the BBC website in relation to the house, it seeems the after departing the take off zone the helicopter must have cleared the trees in the vicinity of the house, crossed the Yarmouth Rd then descended to impact the trees several hundred metres to the west. Therefore there must have been sufficient power initially. The question then is why did it descend again? Disorientation on rotation?? Or power problems??? Seems to be more to this than owner pressure.