I have to say, starting at the back of the field I kinda had a good overview (sadly, lol), and for me in terms of lag it was actually the best race so far, I had nothing at all.
If you have lag with Canapino or Disley that's normal due to their locations, but what you describe is worse than it should be, but it's not the server. It doesn't matter if your internet speed is normal, because you measure that to probably somewhere in England close to your location, which is irrelevant. What matters is the connection performance to abroad. And it is a known issue the UK or parts of it has rather weak connections in this regard. That's what I was told from several sources.
It's easy to say "things need sorting" but I have to say that is a bit of a naive statement, because I guess neither you or us can do something big about it.