Re: Invented?
TCP/IP, ethernet, BGP, the list goes on... And it's debatable that packet switching is a British invention, since an American theorized it independently (and before Davies), and is also credited with its implementation in the ARPANET (alongside Davies).
https://en.wikipedia.org/wiki/Paul_Baran
https://en.wikipedia.org/wiki/Vint_Cerf
https://en.wikipedia.org/wiki/Bob_Kahn
https://en.wikipedia.org/wiki/Robert_Metcalfe
It was ARPA's research and funding that made the foundation of the modern (non-http) internet... though certainly the whole set of technologies is a worldwide effort with geniuses from all of the world (notably from the UK!) making it all possible with novel and brilliant ideas.