Mark Leggatt

Mark Leggatt – Editor

I'm an editor and manuscript assessor, and passionate about making your novel ready for the market. My clients include #1 bestselling books.

Overview

I'm a publishing professional, developmental editor and manuscript assessor, and specialise in detailed manuscript assessments for clients in the UK, EU, Australia and North America.

I love to work with debut authors and show them the route to taking their book up to the level required for publication. It's hard work, but great fun. I also know the financial costs for professional advice can be daunting, so I always apply a healthy discount.

I recently assessed and edited the #1 bestselling Sci-Fi/Techno-Thriller on Amazon, ARTIFICIAL WISDOM by Thomas Weaver. This will be republished in the US & UK by Penguin Random House in 2025.

I've also recently completed the assessment and final edit of EXIT WOUNDS for crime author Neil Broadfoot, which will be published by Hachette, and cracking the Historical Fiction of THE COLONY by Daniel Pollock. Next will be an edit for Gabriel Galletti, and his Australian crime novels.

Several of my authors have gained agents in the US and UK, and I have wide experience in working with leading literary consultancies. Author testimonials are available on request.

I have edited several novels created by AI to some degree, and AI is a tool for writers just like Grammarly, or Scrivener, but I always caution authors that novels created by AI often require considerable editing and development to bring them up to scratch, which often negates any advantage AI may bring in the expediency of creating a first draft. And the first thing I do is check the sample to see if it’s something that worth developing by the author and editor, or not.

But one thing's for sure, I do not use any form of AI as an editor, whether for a development edit or editorial assessment. For me, it’s old school red pencil, paper, and experience.

As a prospective client, I have stood in your shoes, having taken professional advice at the start of my career, and I love to pass on all the experience I've gained.

When I'm not assessing and editing, I'm the author of four novels, and topped Blackwell's bestseller charts on two occasions. My novel PENITENT was longlisted for Scottish Crime Book of the Year 2023.

I am a member of the Chartered Institute of Editing and Proofreading.

Testimonials

"Mark is first and foremost a pleasure to work with. He was as passionate about the project as I was, and he would be upfront when something was not working, but never in a way that demoralized me. He’s a consummate professional who always showed up and brought his full attention to our meetings. I can’t recommend him enough."

Thomas R. Weaver - Amazon #1 Technothriller Bestseller, sold globally to Penguin Random House.

“Mark is an insightful and highly skilled editor. His has the ability to develop a strong rapport with his clients to ensure a constructive working relationship based on trust that ensures manuscripts achieve their true potential.”

– Neil Broadfoot,- Author, and McIllvanney and Dundee International Book Prize nominee.

Services
Fiction
Dystopian Espionage Historical Fiction Military Science Fiction Mystery & Crime Post-Apocalyptic Psychological Thriller Technothriller
Languages
English (AUS) English (CAN) English (UK) English (US)
Awards
  • Longlisted for Scottish Crime Book of the Year, 2023, the McIlvanney Prize

Work experience

Self-employed

Jun, 2014 — Present
I provide Developmental Editing and Editorial Assessments for debut and published authors, who require a detailed assessment of their work. This generally involves the following areas; Commerciality and the Market Writing Style, Voice and Technique Plot and Structure (inc. sub plots) Pacing/Tension/Narrative Drive Dialogue and Characterisation Requested focus by the Author Next Steps and Conclusion For costs, I use the standard Reedsy Pricing Calculator, but I normally run at least a 25% discount. My clients range from California to Canada, and from Europe to Australia. I assess manuscripts with an experienced eye and a feel for the market. I specialise in Crime, Mystery, Sci-Fi, Fantasy and Thrillers and have assessed and edited seven novels for Hachette and Penguin, including self-published novels for Gabriel Galletti and NS Brooks. Several of my authors have gained agents in the US and UK, and I have wide experience in working with leading literary consultancies.

Portfolio

Artificial Wisdom: A Novel

Weaver, Thomas R.

Del Rey

Developmental Editing Copy Editing Editorial Assessment
Exit Wounds

Broadfoot, Neil

Constable

Developmental Editing Copy Editing Editorial Assessment
Developmental Editing Copy Editing Editorial Assessment Query Letter Review
Developmental Editing Copy Editing Editorial Assessment
The Point of No Return

Broadfoot, Neil

Constable

Developmental Editing Copy Editing Editorial Assessment
No Quarter Given (Connor Fraser)

Broadfoot, Neil

Constable

Developmental Editing Copy Editing Editorial Assessment
Violent Ends (Connor Fraser)

Broadfoot, Neil

Constable

Developmental Editing Copy Editing Editorial Assessment
Unmarked Graves

Broadfoot, Neil

Constable

Developmental Editing Copy Editing Editorial Assessment
Developmental Editing Editorial Assessment
Agamemnon (The DHARMA Directive Book 1)

Carver, R.H.

Cosmic Inkworks

Developmental Editing Editorial Assessment
Made with Reedsy
The Tartarus Conspiracy: Seven Thrilling Days Before Dystopia

Oxfield, William J.

Oxfield Books

Developmental Editing Editorial Assessment
The Colony

Pollock, Daniel

Daniel Pollock

Developmental Editing Copy Editing Editorial Assessment
Developmental Editing Copy Editing Editorial Assessment
Revenge

Brooks, N S

NS Brooks

Developmental Editing Copy Editing Editorial Assessment
Betrayed

Brooks, N S

Developmental Editing Copy Editing Editorial Assessment
Developmental Editing Editorial Assessment

Mark has 20 reviews

Professionalism

Quality

Value

Responsiveness

Sam K.

Sam K.

Nov, 2025

Pinned
If you are reading this review because, like me a few months ago, you are dipping your toes into getting professional help with your book, then all I can say is DO IT! I read through all of Mark’s reviews, and I knew he was the type of editor I wanted and needed. From the moment I made contact, I...
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Mark L.
Thanks Sam, it was such a great story to work on, and the kind of book that makes me love my job. Even though there's work to do, we can picture the finishing line, 'cos you've got the skills, and ...
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Hannes R.

Hannes R.

Oct, 2025

Pinned
Best money I ever spent on Reedsy! If you want to find out how good your book can be, go with Mark. Through developmental edits and line-level corrections/suggestions, he really paved the way for me to elevate my story. I used to hire different editors for all of my writing needs (to keep learn...
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Mark L.
Thanks Hannes! I loved the book, and it was such fun to work on it, and to immerse myself in the world of Kleinberg. I'm looking forward to see what happens next!
Thomas L.

Thomas L.

Feb, 2025

Pinned
Mark is that special sort of editor you hope to find if you're very lucky: super-responsive, creative, insightful, and encouraging. He gave me the tools and understanding needed to take my manuscript from a passion project useful only to myself, to a commercially viable novel that publishers woul...
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Mark L.
Thanks, Thomas, I really enjoyed working with you, and reading your book. It's a fantastic idea - hope to see it on the shelves one day!
Kutlu K.

Kutlu K.

Nov, 2025

Working with Mark on my sci-fi novel was a great and insightful experience. His developmental report was incredibly detailed, providing a clear, actionable roadmap for my next revision. He has a sharp eye for both big-picture structural issues (plot, pacing) and the line-level prose habits that I...
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Mark L.
Thanks Kutlu, it was so interesting and rewarding to work on your book. And what a plot! Absolutely eye-opener. But even the low level worldbuilding detail was fantastic and really pulled you in. ...
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dale E.

dale E.

Oct, 2025

Mark pointed out inconsistencies in my story that didn't occur to me. He suggested alternatives which I originally resisted but after considering them further realized they made my story stronger and more engaging. He honestly pointed out the good bits and the not-so-good bits. His comments were ...
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Mark L.
Thanks Dale, it's a fantastic story, with excellent writing, and one of the most original plots I've seen. It kept me guessing all the way through! I'd love to see that in a bookshop, it's such an...
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