Diederick has been working in TV drama for 20 years. He graduated from the University of Leeds with a degree in Psychology and the History of Philosophy of Science.
His TV career began with script reading, and then script editing on ITV dramas Where The Heart Is, A&E and The Last Train. He joined BBC Drama in 2000, where he developed and produced the first three series of Cutting It, Debbie Horsfield’s hit hairdressing drama.
Diederick developed and produced a number of other dramas for BBC including a much-loved adaptation of Jane Eyre (2006). From 2006 to 2010 he was executive producer, EastEnders, overseeing hundreds of episodes, delivering the live 25th anniversary show, and winning numerous awards including a BAFTA.
In 2010 he left BBC and set up Lovely Day, a drama label within Kudos. In 2014 Lovely Day’s crime series Grantchester was ITV’s highest-rated new drama series of the year.
In 2015 Diederick become Joint CEO of Kudos, with Lovely Day becoming absorbed into Kudos. In 2016 he became sole Chief Executive. Diederick executive produces a number of the Kudos shows, including Grantchester (now in its third series), Flowers, Man In An Orange Shirt, and Tin Star.