Margaret Gray

Margaret Gray – Editor

Hi there! I am a fiction and non-fiction editor based in London. Please feel free to reach out.


With years of in-house experience editing and reading at Penguin Random House and HarperCollins UK, I know what it takes to make a book stand out.

From the earliest stages of writing and developing your book (or your idea for one!), to structural and line edits, right up to pitching your book to agents and editors, I will help you make sure your submission gets to the top of the pile.

I have worked with many award-winning authors and Sunday Times bestsellers across genres and markets. I am experienced in editing both fiction and narrative non-fiction, and can also help with pitching more proposition-led non-fiction.

I don't work on YA, Fantasy, Science Fiction or Children's Books.

I'm a warm, friendly editor who loves helping people achieve their writing goals, whatever they may be.

Please do reach out if you would like any more info.

Very best
Biographies & Memoirs
Contemporary Fiction Literary Fiction
English (UK) English (US)
  • Book Editing Certification, The London School of Publishing
  • English and French BA (Hons) - 1st Class, University College London

Work experience

Penguin Random House; HarperCollins Publishers UK

Jul, 2018 — Aug, 2022 (about 4 years)

I have held various positions in Editorial, working across genres.


The key to rising to the top of your company lies in a simple message and philosophy. The ultimate inspirational story for ambitious innovators, market-disruptors, and global business entrepreneurs. Celebrating DHL’s fiftieth anniversary as a world-leading del... read more
How to Make it Happen

Maria Hatzistefanis

Success is not final and failure is not fatal.Maria Hatzistefanis should know. Having spent 20 years building her own company (described by the press as 'an overnight success'), she acknowledges how hard it is to keep going and find your motivation, especially... read more
The Blackhouse

Carole Johnstone

A remote village. A deadly secret. An outsider who knows the truth... ‘ATMOSPHERIC AND COMPELLING, WITH SOME VERY UNEXPECTED TWISTS!’ Catherine Cooper, Sunday Times bestselling author of The Chalet and The Chateau Maggie Mackay has been haunted her entire life... read more
THE #1 SUNDAY TIMES BESTSELLER ‘I loved this book’ RICHARD OSMAN ‘An antiheroine able to best villainous male protagonists such as Patrick Bateman any day’ OBSERVER ‘Chilling, but also laugh-out-loud funny. Another corker’ SUNDAY TELEGRAPH They say you can’t c... read more

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