Sian Brooke is a British actress. She started her acting career in the early 2000s, debuting in the TV series Dinotopia. She next played the role of Laura in some episodes of All About George. After this, she acted in the TV movie Under the Greenwood Tree, as well as in the TV film Housewife, 49. In 2004, she played Lori Marcuse in Channel 4’s Cape Wrath. She next starred in the ITV made-for-television film The Commander. In the 2010s, she had guest performances in Vexed, New Tricks, Silk, Garrow’s Law, Man Down, and Lewis. She next had a recurring character Martine McCutcheon in Not Safe for Work. In 2017, she played Sian Lambert in some episodes of BBC One’s Doctor Foster. Brooke recently played Deidre Young in Prime Video’s Good Omens.