Siri was born in Wales and is the daughter of an opera singer and a coal miner.
At university she studied Medieval Literature.
She has worked as a weather girl in France, sold Christmas trees in Wales and was a film editor in New York, before becoming a director at Channel 4.
Her work has won countless awards.
She has directed commercials all over the world for clients including Adidas, Nike, Google, Guinness, Renault, Sainsbury's, British Airways, Finlandia, HSBC and McDonalds.
In 2017 she was named one of the top five commercial directors in the world by Advertising Age.