After reading the Engine Shed post above, I e-mailed Hornby customer service and received an ambiguous "We have included the smoke deflectors, and these will be used in future releases as the smoke deflectors were an addition to the locomotive during its working life." I asked for clarity (in a detailing pack etc.?) and then got "...the locomotive will have factory fitted smoke deflectors." and a picture of Earl Marischal in as-built condition. I have since cancelled my order and will await the later version to be released.