Zennor Compton

Zennor Compton – Editor

Former Penguin editorial director with over a decade's experience publishing non-fiction bestsellers. Memoir specialist.

Overview

Looking for an honest but empathetic editor to make your non-fiction book shine? Whether you have the nugget of an idea, a full manuscript or anything in-between, I can help. I offer book coaching, editorial assessments and developmental editing to help you reach your goals. If you're not sure what you need, that's fine. I offer a free 15-minute consultation call to all new clients.

I specialize in memoir, nature, travel, narrative non-fiction and entertainment books but I’ve also worked on self-improvement, spirituality, history, humour… Even colouring books! I help authors realise their full potential by combining high editorial standards with clear commercial focus. I balance respect for an author's voice with grounded understanding of what readers want and need.

Over my 12 years working at Penguin and Macmillan, I published dozens of bestsellers; half of the books I published in the year before I left Penguin hit the Sunday Times lists. Books I've worked on have won prizes, been bookseller picks and featured on countless outlets from The Times and Radio 4 to This Morning. I have worked with seasoned writers, experts, celebrities and major brands such as:

Night People: How to be a DJ in 90s New York by Mark Ronson

Me vs Brain: an Overthinker’s Guide to Life by Hayley Morris

Bimbo: Ditch the Labels, Find Your Voice, Reclaim Your Confidence by Ashley James

The Wilder Way: A Memoir of Adventure, Freedom and an Uncharted Life by Eva zu Beck

Black and British: A Forgotten History by David Olusoga

North Road by Rob Cowen

Hermit: A Memoir of Finding Freedom in a Wild Place by Jade Angeles Fitton

The Boy Who Followed His Father Into Auschwitz by Jeremy Dronfield

Drop me a line!

Testimonials:

'Zennor has a genius for honing in on what the true story of the book is, where the focus should be. She seemingly instinctively senses the shape of a book with an omnipotence a writer too close to the page is unable to. Zennor is a sensible, sensitive guide with a gimlet eye for detail, gently nudging when a writer might have gone off course, while maintaining the all-important for a writer: faith and encouragement. I can say from experience that if she is your editor you are in a very safe pair of hands.' Jade Angeles Fitton, author of HERMIT

'Working with Zennor gave me the confidence to finally put pen to page and write my book, Bimbo. I’d already put so much of myself into the manuscript, but she helped me step back and see the bigger picture without losing my voice. Zennor has this rare ability to hold the structure, the argument and the reader in her head, while also caring deeply about clarity and tone. She asked thoughtful, sometimes uncomfortable questions, but always with kindness and purpose. I never felt edited out of my own work; I felt more confident, focused, and clearer about what I was trying to say and why it mattered.' Ashley James, author of BIMBO

Services
Non-Fiction
Biographies & Memoirs Entertainment Health & Wellbeing Inspirational Nature Self-Help & Self-Improvement Travel True Crime
Languages
English (UK)

Work experience

Penguin Random House

Oct, 2018 — Aug, 2025 (almost 7 years)
I worked at Penguin Random House for eight years, most recently as Editorial Director for Cornerstone Non-Fiction. I published and edited numerous Sunday Times and international bestsellers across memoir, nature writing, humour, self-help and fitness.

Pan Macmillan

Jul, 2013 — Oct, 2017 (about 4 years)
I cut my teeth as an editor at Pan Macmillan, first working as an assistant in the fiction department before moving to the wonderful world of non-fiction. I worked with the acquirers to edit books such as Black and British by David Olusoga, The Kamikaze Hunters by Will Iredale and a selection of books from The School of Life. I also acquired, edited (and even wrote!) my first books there: The 365 Bullet Guide, Humans of New York: Stories and The Anxiety Journal.

Portfolio

Developmental Editing Copy Editing Book Coaching
Developmental Editing Editorial Assessment
The Wilder Way

Eva zu Beck

Cornerstone

From YouTube adventurer and National Geographic TV host, an inspiring travel memoir of one woman’s solo adventures around the world and her pursuit of freedom. Eva had it all: a high-flying jo... read more
Developmental Editing Copy Editing Editorial Assessment
Night People: How to Be a DJ in '90s New York City

Ronson, Mark

Grand Central Publishing

Editorial Assessment Query Letter Review
The North Road

Cowen, Rob

Hutchinson Heinemann

Developmental Editing Editorial Assessment Book Coaching
Me vs Brain

Hayley Morris

Cornerstone

THE SUNDAY TIMES BESTSELLER. ORDER THE HILARIOUS BOOK FROM TIKTOK AND INSTA SENSATION HAYLEY MORRIS, NOW!_____'An insightful, intimate account of modern life that is a joy to read, with shades... read more
Developmental Editing Copy Editing Editorial Assessment Book Coaching
The Anxiety Journal

Corinne Sweet

Pan Macmillan

A beautifully illustrated, practical journal to help combat anxiety, wherever you are.Supportive and uplifting, this is a journal for anyone who struggles with anxiety, whether in the form of ... read more
Developmental Editing Copy Editing Editorial Assessment
How to Be Bored

Eva Hoffman

Pan Macmillan

Lethargic inactivity can be debilitating and depressing; but for those living in the modern world, the pendulum has swung far in the other direction. We live in a hectic, hyperactive, over-sti... read more
Copy Editing Editorial Assessment
Would It Surprise You To Know...?

Ronnie Archer-Morgan

Cornerstone

'Ronnie has overcome a heart-breaking start in life to achieve great success and no one deserves it more. What a dude, what a life!' - Fiona Bruce'Brilliant...a mercurial memoir of a meritorio... read more
Editorial Assessment
The Traitors

Alan Connor

Penguin Random House

'This book is brilliant' Zoe Ball, BBC Radio 2 Enjoying the Celebrity Traitors? Recreate the round tables, Traitors turret, and immersive challenges at home with the official Traitors game boo... read more
Editorial Assessment
Developmental Editing Copy Editing Editorial Assessment Book Coaching
Developmental Editing Copy Editing Editorial Assessment Query Letter Review
Black and British

David Olusoga

Pan Macmillan

Winner of the PEN Hessell-Tiltman PrizeWinner of the Longman History Today Trustees’ AwardLonglisted for the Orwell PrizeUnflinching and revealing, Black and British is a vital history that re... read more
Developmental Editing Copy Editing Editorial Assessment
Keeping My Sister's Secrets

Beezy Marsh

Pan Macmillan

The moving true story of three sisters born into poverty and their fight for survival.Eva, Peggy and Kathleen were sisters born into a close-knit working class family, living in a tiny terrace... read more
Developmental Editing Copy Editing Editorial Assessment
One Plus One Equals Three

Dave Trott

Pan Macmillan

How do you make something out of nothing?Up your game with this masterclass in creative thinking. Combining Dave Trott's distinctive, almost Zen-like storytelling, humour and practical advice,... read more
Developmental Editing Copy Editing Editorial Assessment
How to Eat Cock

Cosima Hussey

National Geographic Books

Brilliant protein-packed meals that don't hold back on the spice.' Joe Dicks, bestselling author of High Impact Intercourse Training'This delightfully raunchily-titled read is, of course, a re... read more
Developmental Editing Editorial Assessment Book Coaching
The Brain Health Puzzle Book

Alzheimer's Society

Random House

Not just good for you. Hugely challenging and hugely enjoyable - Jeremy VineSolve over 150 mind-bending puzzles - and boost your brain health at the same time!Challenge your memory, test your ... read more
Editorial Assessment
My Girl

Michelle Hadaway

Random House

Shortlisted in the 'True Crime Book Of The Year' category for Capital Crime’s Fingerprint Awards, 2023.On Thursday 9th October 1986, Michelle Hadaway's worst fears came true. After watching he... read more
Developmental Editing Copy Editing Editorial Assessment Book Coaching
The 365 Bullet Guide

Zennor Compton

Pan Macmillan

Say hello to the bullet system: a revolutionary organization method that will increase both your efficiency and your creativity. At its simplest, the bullet method will provide you with a fool proof to-do list that will ensure you never miss a task or appointm... read more
Wild Once

Vivianne Crowley

Cornerstone

What secret power is hiding within you?There is an untamed wildness within each of us. Once found and nurtured, this wild power can lead to true and boundless freedom, creativity and purpose.I... read more
Developmental Editing Copy Editing Editorial Assessment Book Coaching
How to Build a Body That Lasts

Adam Richardson

Cornerstone Publishing

The Sunday Times bestseller 'Fun, informative and engaging. A must read!' Lucy Lord, author of Food For The Soul ''Simple stretches to stop you seizing up in middle age' Sunday Times Discover ... read more
Developmental Editing Copy Editing Editorial Assessment Book Coaching
The Kamikaze Hunters

Will Iredale

Pan Macmillan

The Sunday Times Top Ten Bestseller. In May 1945, with victory in Europe established, the war was all but over. But on the other side of the world, the Allies were still engaged in a bitter st... read more
Developmental Editing Copy Editing Editorial Assessment
You Can't Have My Daughter

Elizabeth McDonnell

Pan Macmillan

As a single 51-year-old woman, Elizabeth McDonnell had given up hope of ever becoming a mother. When she was approved to adopt ten-year-old Lara, a sweet and caring girl, it was a dream come t... read more
Developmental Editing Copy Editing Editorial Assessment
The Hurricane Girls

Jo Wheeler

Penguin UK

Celebrating the lives of the magnificent women, the ATA girls, who courageously flew Spitfires, Tiger Moths, Lancaster Bombers and many other aircraft during World War Two.These extraordinary ... read more
Developmental Editing Copy Editing Editorial Assessment
5 Minute Therapy

Sarah Crosby

Random House

_____________________________This book is your pocket therapistFive Minute Therapy makes being the best version of yourself quick and easy. Who am I? What does that dreaded phrase 'Just be you... read more
Developmental Editing Copy Editing Editorial Assessment Book Coaching
“Brilliantlywritten, vivid, a powerful and often uncomfortable true story that deserves tobe read and remembered. It beautifully captures the strength of the bondbetween a father and son.”--He... read more
Developmental Editing Editorial Assessment
How (Not) To Be Strong

Scott, Alex

Century

Developmental Editing Copy Editing Editorial Assessment Book Coaching
Just Good Manners

William Hanson

Penguin Random House

A Sunday Times Bestseller 'Incredibly interesting and very funny.' - The Times 'This book sparkles like the cut glass of a crystal decanter.' Tom Allen, comedian ______________________________... read more
Developmental Editing Editorial Assessment Book Coaching

Zennor has 1 review

Professionalism

Quality

Value

Responsiveness

Modestas L.

Modestas L.

Jan, 2026

Zennor provided a thoughtful, rigorous editorial assessment that engaged seriously with both the strengths and structural challenges of my manuscript. Her feedback was clear, specific and respectful of voice, with particularly helpful insights into pacing, repetition and narrative arc. I found th...
Read more

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