I don't think they are mentioned, so what about the IT Crowd?
Some of the kids I talk to (I am a STEM ambassador) have seen it, and think its quite funny. At least kids'd know how to deal with serious failures:-)
I think one was mentioned, but UK Icons who are recognised around the world are the Top Gear guys. Hammond presents "science", and May did the brilliant series on toys.
There may be recognisable stand-ups.
Maybe Dara O'Briain? He seems to usually has a chunk of tech. in his act.
Maybe Russel Howard who has a 'tech spot' on his show.
(There is a younger guy, but I can't think of his name, who did some 'app' jokes)
With a very good sound application, musicians might be attracted to the cause.
Brian Cox might be good.