I found the articles ( there was another one in a similar vein in another of James Hiltons books ) a bit odd. I mean, if you are going to exhibit a layout which was bought and not built by you, you need to be prepared to answer questions about it's construction etc.
My first ( and second, actually) layout was sold to a nice chap in County Durham and are exhibited, last time being at York this year where Sheep Lane was being shown. I was invited by the new owner to go along for the weekend to help operate, but being Easter, I had to sadly decline. A pity as I would have taken the original stock along.
As an aside, a couple of years ago now, I did see a piece on Sheep Dip on a club website, attributing the layout to the new owner with lots of inaccuracies about its construction. I did write to the club to correct things but never received a response from them..
Rob