Yes indeed, some parts were used from this kit. However the original card was used as a template for plastic card. The model was built by a good friend of mine in 2010.
The thing that struck me about your model was the quality of the finish. I have seen images of models made with the kit you refer to and they rarely look as good as yours.
Hope you will not mind a few more questions:
How is it powered and what chassis/wheels were used?
How does it run? (I note the tangible version of the design has a lot of overhang at the rear, I wonder if that causes any issues? Perhaps the real Ivor should have been an 0-4-2?)
James
PS : No dis-respect to the kit suppliers, as the model they supply looks nice enough, but it looks like you have workable and useful version of the loco.