When the queen is being flogged on the wagon tongues, as she is released she just lets go of the ropes and you can see her hands are no longer tied to them.
Druids did not worship Zeus.
Loosely based on the Iceni warrior queen Boudica, who revolted against Roman rule in the first century A.D, there wold be no Vikings in England for another 700 years.
The fact of a soldier wearing a wristwatch has passed into movie folklore as the favorite goof of many moviegoers. Similar stories are told of Ben Hur (1959) and Spartacus (1960). For The Viking Queen no still or precise reference has ever been found, and it is likely that the story is either apocryphal or that one of the wristbands worn by the soldiers was mistaken for a wristwatch.
Contrary to the title, the movie is about a Celtic queen and her people.
Set in the 1st Century, a wristwatch is visible.
Production equipment clearly visible at end of opening scene, when Tristram (Patrick Troughton) rides away from Romans in chariot. Look for a light blue cloth covering a cart of white and stainless steel objects, perhaps the film crew's lunch wagon, just as the chariot turns away.