I lucked out on a Yahoo groups site and a lady there sold me the four Chad Valley ones...Kehaar, Blackberry, Fiver and Hazel I thought there was a fifth Chad Valley one, she said....a Bigwig one, but I haven't found that anywhere yet!!!!
Where did you get the Chad Valley one from? UK EBAY? I lucked out with the person in the US who managed to get the toys from the UK But as a set of four, are probably almost impossible to find even on UK Ebay. I search there occasionally as well.
They seem to come in droves on Ebay. I completed my collection only because the last month or so on US Ebay, some people were selling their whole collections, but by single figurines, not the entire set.