Factual errors

Winston Churchill was Home Secretary 1910-1911, not after World War I when the series is set.

Continuity

In Episode #1.6, Polly told Ada that her daughter was 3 years old and her son was 5 when they were taken away, and in episode #2.1 she said her daughter was turning 18, but then in episode #2.3 her son Michael said he was only 17.

Miscellaneous

When the characters are supposed to speak in Gypsy language they are actually talking in Romanian.