(02 Jan 2016, 12:09 pm)Dan wrote Adrian is correct - KU52RXF does have a flipdot route number and destination display fitted. Although the photograph below doesn't depict the side display, it is indeed a route number and destination display.
Hunter's of Tantobie: KU52RXF by Daniel Graham, on Flickr
Often when I see KU52RXF it is not displaying 'Flint Hill' like in Dan's photograph, it's display is usually shown like it is on W363ABD.