Tamara Valerie Smart was born in North London to English parents, Fiona and Cornelius Smart. Cornelius is an engineer and Fiona works in Fashion Retail. She lives in London and has 2 older sisters. Olivia who is training to be a nurse and Justine who is training to be a Lawyer. She attended Hollypark School and then moved onto Mill Hill County High School. She attended a local dance school from the age of 3, DanceCrazy Studios and then joined the local Barnet branch of Razzamatazz at the age of 7. She performed in many Dance competitions including All England.

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In January 2015 she was cast as Enid Nightshade in a BBC remake of the Worst Witch, written by bestselling Author Jill Murphy.

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She also completed numerous modeling shoots for Marks and Spencers and New Look.

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In December 2017 she was cast as Hailey Hicks in the prime BBC series Hard Sun along side Jim Sturgess and Agnes's Deyn.

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In January 2018 following numerous auditions she was cast as Juliet Butler in Disney's Artemis Fowl working alongside Dame Judy Dench and Josh Gad directed by Sir Kenneth Branagh. This feature film will be released in August 2019.  Source.