Top 25 UK-Born Super-Heroes that Originated in British Comic Books
I'm using a fairly loose, but common definition of "Superhero" here. Basically heroic characters who either have powers, or use an elaborate set of gadgets and have superhero-style code-names.
Generally if you were to ask someone in Britain about our comics you would probably have them talk about a plethora of humourous naughty children, WW2 soldiering, or perhaps 2000AD. However in the 60s UK costumed adventurers were quite commonplace and were shifting huge numbers, with comics starring characters such as The Steel Claw, and Robot Archie selling in the hundreds of thousands.
The list was more difficult to make than I thought it would be. Its one thing to find Super-Heroes in UK comics, but quite another to find notable British superheroes, as many of our more famous characters are either set in other countries (Judge Dredd, Tank Girl) or are aliens (Nemesis the Warlock, Death's Head).
I honestly could've gone all the way up to 50, but most of the characters would've been short-lived, unremarkable knock-offs of famous characters, I'm happier with these 20 that I think are interesting.
EDIT: This is an older version of the list, to see the up to date version go here -
http://comicstrip-sanctuary.com/Top-20-UK-Superheroes-Page-1.html