Like so many of you, I also adore this story. It’s groundbreaking, so fresh and a dyed-in-the-wool classic. Many things that The Time Meddler did for the first time have since become staples of the modern series.
I absolutely agree with @deltaandthebannermen about the Vikings yet, even then, would suggest it is more a production issue than a script issue. Their pillaging activities are actually portrayed with a surprising degree of brutality.
Love this story.
Poetry, dear boy. Sheer poetry!