Well, I will not spoil the BBC version further, in this post.
I will just say that (unable to watch, in the USA)
I looked online for reviews of the show,
the third and final episode just aired last night in the UK.

So I read the spoiler review elsewhere for the conclusion.
And WHOA!    Changes left, right, and center!
It sounds dreadfully confusing.

Now it comes out, in one soundbite in the news,
that one of the writer/editor/producer/adaptors
had suffered a bereavement at about the time
that this person was working on the H G Wells assignment;
and -- not naming the person, but the soundbite names them --
this person decided that
the bereavement would be a better way to end the film
than the actual ending that H. G. Wells wrote.

That kind of makes me ... feel ...
well, just as well I couldn't watch the show after all.