Julia co-founded TGLA with Nikesh. She is a literary agent and publishing and consumer marketing consultant. She set up the literary agency Kingsford Campbell in 2014, where she still represents clients including Nikesh, and prior to that was co-founder and CEO of World Book Night and Head of Marketing at Foyles bookshops. She has been a British Council Young Publishing Entrepreneur, one of the Evening Standard’s 1000 Most Influential Londoners, one of The Bookseller's 100 most influential people in publishing and the FutureBook Distruptor of the Year.

She is also co-writing a book with her sister Katherine, who is autistic which is called Aspergers & Asparagus and will be published by Bluebird in 2020.

At TGLA Julia and Nikesh share responsibility for the management, administration and strategy. Julia does not represent clients at TGLA.