A Boeing 737-300 operated by bmiBaby was scheduled to operate a commercial air transport flight from Birmingham to Edinburgh on the morning of 6 February 2009. The weather was poor and the crew had the aircraft de-iced prior to departure. The stabiliser trim was not set at the usual time due to the ongoing de-icing procedure and the omission was not noticed after start because the crew became preoccupied with the flap setting. The aircraft started its takeoff run with the incorrect stabiliser trim setting and the First Officer, the designated Pilot Flying, was subsequently unable to raise the aircraft nose at VR. The Captain then decided to reject the takeoff. The thrust levers were closed at 155 knots and the aircraft stopped without further incident.