I repeated the question on this CBO and the response was the same...silence. Well, one person wrote that they had no knowledge of British Golden or Silver Age characters. I tend to think the silence was down to readers being bashful.
My collection means that I can pull together not just a UK team but if I wanted a German team based on old German pulps, India and even a Hong Kong/Chinese team. I was once (actually a few times) told that the problem was that I was spoilt for choice. I guess that is true living in a house literally constructed from comics and graphic novels 😉 I fear only a plague of mice and leaky roof!
Is it worth asking the question again? Just off the top of my head for D. C. Thomson I'd have Billy Whizz, Billy and Katie the Cat, Captain Hornet, Red Star Robinson -there are a lot of choices and some of the aforementioned characters did appear in the Thomson requested (then dumped) project from the late 1980s.
Fleetway: The Phantom Viking, Thunderbolt the Avenger, The Leopard from Lime Street, Steel Claw and...well, I could go on.
In fact the best group(s) would be ones with a core membership and guest characters to keep things interesting and lively.
I already put together one 1920s/1930s team-the Society for the Suppression of Criminal Activity (SSCA) and they had one outing in The Cross Earths Caper and they'll be back if I get the time and opportunity.
When it comes to the UK 1950s-1960s Independent publishers there are also a good selection of characters.
So, can you come up with a selection for a team?
If you are in Europe maybe you can suggest Dutch, Belgian characters for a hero team. Let me know.