Is your console hardwired to the router? That makes a big difference, but even then for PVP modes it depends on which server the game is running off.
If I’m hosting a game - let’s say a Horde or Escape game, my ping is typically between 2-8. One of my friends is also from the UK, albeit about 80 miles away, but when I connect to his lobbies my ping is the same and is usually even lower than his one is despite him hosting, so presumably we’re on the same server but I just have a better connection.