Heck, Clarke (communications satellites) and a whole bunch of Brits coming up with ideas, inventions and proposals about actual things to be done in space. As late as the 80s they were working on HOTOL single-stage-to-orbit technology.
BUT, the Empire having gone-out-of-business, the UK could not afford taking all this to fruition. Seems like at some point Official Britain just turned to the *“MSF is a bloody waste of money” *camp.
You’re forgetting Dan Dare, who was huge. Almost made it to the screen a couple of times in the 80s, until they figured out that there wasn’t enough money to do it properly.