Running take offs are still often used by RN Sea Kings in an attempt to prolong the life of those venerable old airframes. It's also an SOP when embarked in an aircraft carrier and the ship can't manoeuvre to generate sufficient relative wind to keep the aircraft within the Ship's Helicopter Operating Limits. It's easier to conduct an aft facing running take off (relative wind permitting), forward facing take offs require the pilot to dodge around the ship's ski jump ramp.