Arthur's wife, Linda Shelby (played by Kate Phillips), was originally a devout Christian, attempting to help Arthur through sobriety, mental issues, and PTSD as a result of the First World War. Fast forward to season four, and Linda was as ruthless as the rest of the Shelby family, challenging Tommy about Arthur's right to hold influence over the family and Shelby Company Limited.
In addition to Peaky Blinders, Kate Phillips has starred in a number of hit British TV series, such as Wolf Hall, War & Peace, and The Crown. She played Princess Marry in the movie adaptation of Downton Abbey and Eliza Scarlet in Miss Scarlet and the Duke.