A child's first introduction to having there own Bayko was more than likely being given a set perhaps as a Christmas or Birthday present or a special treat. From there the child's interest may either grow or wane. If the child's interest grew then they would soon be after there parents buying more Bayko something that the Plimpton company could easily fulfill. If it waned then the set would likely be put away and gather dust to be found years later be a curious descendant who had never seen Bayko,
There is a remarkable similarity between two Liverpool toy makers that of Charles Plimpton with Bayko and Frank Hornby with his Meccano sets. It is likely both men met at some point both living in the same city and having factories near to each other. After both of their death's their firms would merge into one. However that in the early 30's when Charles Plimpton was starting out with his Bayko was well into the future.
What Charles Plimpton did take from Frank Hornby was the set structure that of starting with an small set then building on this , in other words the larger set would contain all the parts of the smaller set plus some extra parts. This led to 2 things, the first is that all the models in the smaller set or sets could be built by the larger set, secondly the extra parts needed for the larger set could be put into a conversion set, so that a even if the first set the child had was to smallest set if the interest was there over a period of time the child by being bought conversion sets could migrate to the larger set.