Berwick started her career at Channel 4, where she worked on publicity and operations.
When Bravo was acquired by NBCUniversal, Berwick became general manager, and later president, of the network.
[2] Berwick is credited with helping build Bravo into a powerhouse of unscripted television.
[4] As chairman, Berwick oversaw program strategy and business operations for NBC, the company's flagship broadcast network, and NBCU's six cable entertainment networks, USA Network, Bravo, E!, Oxygen True Crime, SYFY and Universal Kids.
Her portfolio was expanded to include development of original content across broadcast, cable, and the streaming service, Peacock.