Good find. I remember that Dauntless from the early 1960s, and it's still around, on sale, today, albeit in newer packaging, and I'm about to order the original boxing of the Bristol Bulldog.
The latter was originally produced by a company called Inpact, in the mid 1960s, who's kits were way ahead of their time, and even included a reel of 'invisible' thread, for the rigging (which is where I got the idea from, all those years ago!).
The moulds have been used since, by Lindberg, Pyro, and Lifelike, and the kits stand up very well against today's products. Their Gladiator, for example, is arguably as good as, possibly better than, the Roden kit.
That Flycatcher might be worth grabbing, as it's quite rare nowadays, especially for UK modellers - could possibly make a 'killing' on a well-know auction site ......