I can just imagine a bunch of producers and writers sitting around a big table throwing around really bad ideas such as:
Producer #1: We need a show that targets the 13 to 19 market, like Buffy the Vampire Slayer did in the US.
Producer #2: I've got a great idea; how about a British Buffy the Vampire Slayer!
Writer #1: Brilliant!
Producer #1: We don't want to look like we're copying the Americans though.
Writer #2: We could change it up with a male lead.
Producer #2: That's good but not enough.
Writer #3: How about instead of a vampire slayer he's a demon slayer?
Producer #1: hmmm....I like where this is heading...
Producer #2: By using a comic book hero we could cut costs on the back story and comic book heroes are big time money makers. Look at Spiderman 1-3, X-Men 1-3, Iron Man, Batman, and The Hulk.
Producer #1: I like where you're going with this. We could even come up a video game to market the show.
Writer #1: So who's the comic book hero?
Producer #1: That's your department; my dear boy.
Writer #1: Right; hmmmmm....
Writer #2: What about Van Helsing?
Producer #1: Who the hell is that?
Writer #2: Remember that terrible vampire/werewolf film with Hugh Jackman and Kate Beckinsale?
Producer#1: Oh yea...that Steven Somer's bomb
Writer #2: Hugh Jackman's character was Van Helsing, a famous monster hunter who goes to Transylvania to kill Dracula.
Writer #1: And Van Helsing's got all kinds of cool old weapons and gadgets like a medieval James Bond!
Producer #2: This sounds perfect guys!
Producer #1: I like it! Add a couple sexy teens to the script, leather, some cool demons and we got ourselves a UK hit!! I want you guys to write me up a pilot and I'll sell it to the big boys.
And Viola! just like that you have another crappy TV show called Demons!!