Sonny Marr

Sonny Marr – Editor

Editor and pitch writer for fiction and personal memoir. I will shape your manuscript and offer guidance on how to get it published.

Overview

I am a professional Commissioning Editor specialising in fiction and personal memoir. I love working with authors at the start of their career. I will take your manuscript from rough draft to polished manuscript whilst offering support and guidance on how to navigate the publishing industry. I am particularly skilled at helping writers hone their pitch to ensure that literary agents and publishers sit up and take notice.

With 10 years experience in trade publishing, I have edited and published numerous Sunday Times and NYT bestsellers and worked with authors such as Sophie Cousens, Susan Lewis, Kathy Reichs, Pet Shop Boys, Kiersten Modglin and many more!

I am available for copyediting and proofreading, but the most valuable service I offer is in shaping your manuscript to ensure that it reaches its most compelling and commercial potential.

I began my career at a literary agency, and I also work as a Development Producer for podcasts. If you have a great idea for a non-fiction narrative series, or are struggling to decide whether your idea would work better as a podcast or a book, I'm very happy to help.

Note: I usually suggest that we get on a call before preparing a quote/making an offer. This is so I can properly tailor the work to your goals, needs and budget. It's also a good opportunity to see if we get along!

Services
Non-Fiction
Biographies & Memoirs
Fiction
Contemporary Fiction Historical Fiction Mystery & Crime Psychological Thriller Romance Women's Fiction Young Adult
Languages
English (UK)

Work experience

Hachette

Jun, 2021 — Present

Penguin Random House

Sep, 2016 — Jun, 2021 (over 4 years)

Portfolio

In Case of Emergency

Poorna Bell

Century

Just Haven't Met You Yet

Cousens, Sophie

G.P. Putnam's Sons

I Was There

Alan Edwards

Marr's Guitars

Marr, Johnny

Two Nights: A Novel

Reichs, Kathy

This Time Next Year

Cousens, Sophie

Sonny has 30 reviews

Professionalism

Quality

Value

Responsiveness

Shannon A.

Shannon A.

Aug, 2025

Sonny is a caring and wonderful human. She was patient, kind, knowledgeable, and professional throughout the time she and I worked together on my project. She understands my genre and gave me great suggestions for how to achieve something more with my book that what my manuscript had done. She w...
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Scott H.

Scott H.

Apr, 2025

Sonny was extremely engaged from the onset of the collaboration and very quickly arranged a face-to-face meeting to discuss the manuscript and the finer details of my experiences that would help her shape the direction of the book. Although the original deadline was extended due to unforeseen cir...
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Hannah C.

Hannah C.

Apr, 2025

Sonny has been a great help. I've loved having personalised meetings with her where we've been able to talk about my book in good detail and hear all of her wonderful ideas!
Erica G.

Erica G.

Apr, 2025

This was my first time working with Sonny and I can not say enough great things. She truly was amazing from start to finish and didn't just read and send notes, she was thorough with her work and got on a call with me to go through all her edits and notes and answered all of my questions. She rea...
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Brian D.

Brian D.

Mar, 2025

Sonny is an absolute dream of an editor and I am so beyond grateful to have had the opportunity to work with her on my developmental and line edit for my novel. Sonny comes with a wealth of industry knowledge and her feedback strengthened my novel immensely and brought it to the next level. She w...
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Most recent contributions

How do you handle situations where clients push for lower rates than you typically charge?

It's important to remember that everyone's financial situation is different, so I try to approach these situations with compassion and in good faith. The figure isn't the only thing that can be negotiated. If an author can't afford the service you're offering, consider reducing the rate proportio...
Read more

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