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Before co-founding Caskie Mushens in January 2017, Robert Caskie was a senior Agent and COO at Peters Fraser and Dunlop. He joined the agency in 2008 after two years at MacFarlane Chard Associates and six years at Capel & Land Ltd where he developed and expanded his list of bestselling and award winning writers of fiction, non-fiction and journalism. His  clients have included Sarah Winman, Ruby Wax, Celia Imrie, Rev Richard Coles, Julie Burchill, Simon Schama, Monty Don and Mariella Frostrup. In 2015, Robert founded and launched a digital publishing company, ipsobooks, within the PFD group, publishing 40 books in the first year. Before becoming a literary agent Robert worked in film PR in New York and was a founding partner in the 1990s of euphorium restaurant and bakery in Islington. You can find him on twitter as @rcaskie1 and email him at

You can view Robert’s client list here.


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Juliet Mushens started her publishing career in 2008 at HarperCollins. She became an agent at PFD in 2011, and moved to The Agency Group in 2012 where she was head of their UK literary department. She has been shortlisted for Literary Agent of the Year four years running. She represents a bestselling and critically acclaimed list, including million-copy no. 1 bestseller Jessie Burton (THE MINIATURIST and THE MUSE), NY Times bestseller Taran Matharu (THE SUMMONER series), and Sunday Times bestsellers Ali Land, Claire Douglas, Debbie Howells and James Oswald. On the non-fiction side she represents Very British Problems (@soverybritish). Her guide to YA creative writing was published by Hodder in 2015. You can find her on twitter as @mushenska and email her at

You can view Juliet’s client list here.


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Gemma Osei is the assistant to both Robert and Juliet, working closely with their clients. After graduating from the University of Exeter with a degree in Ancient History, she interned in a few publishing companies before becoming a full-time Bookseller for Waterstones. Her favourite authors include Liane Moriarty, Mary Beard, Alan Cumming, Harper Lee and Malorie Blackman. You can find her on Twitter @gyamfiao and email her at

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