An open pink planner is laid on a wooden desk in front of a mug and computer keyboard.
A black laptop on a white table sits next to a pink diary and pen.

Welcome to

Siân Heap Editorial

You’ve put a lot of work into writing your novel. You deserve a supportive, friendly and experienced editor to make your book shine.

You’re in the right place.

See how I can help you

Hi! I’m Siân, a fiction editor and publishing consultant with extensive experience editing bestsellers. 

I’m passionate about making the editing process joyful and rewarding, and helping authors find their voice.

Get to know more about me
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Dusky pink highlighter squiggle embellishment

Publishers I’ve worked for

Canelo digital publishing logo
Hodder & Stoughton publisher logo
Joffe Books publisher logo

Looking for editorial guidance? See how we can work together!

An open pink planner sits on a wooden desk in front of a white keyboard and desktop computer.
A dusky pink highlighter zigzag embellishment

I’ve worked in publishing for the best part of a decade.

My publishing career has spanned everything from hand-selling my favourite books as a Waterstones bookseller to editing bestsellers.

Now I offer freelance editing to aspiring authors.

Let's make your book shine!
Book cover of 'The Birthday Girl' by Sarah Ward, featuring a stormy landscape with a castle and seagulls. Text reads: 'They're here to unwind. She's here to kill. An absolutely unputdownable crime thriller.'
Book cover of 'Black Water Rising' by Sean Watkin, featuring a city skyline and reflective water.
Book cover of 'The Dinner Lady Detectives' by Hannah Hendy featuring a quaint village illustration.
Book cover for 'The Ex' by Alex Sinclair. Shows two houses facing each other at sunset with silhouettes of two people inside, one in each house, standing at windows. Title in large colorful letters with birds flying across the sky, and tagline 'She's
Cover of the book "Shot in the Dark" by Anna Britton featuring a silhouette of a person walking through a dark, eerie forest with tall trees. Text includes praise from Jo Callaghan and the tagline: 'Three bullets. Five suspects. No alibis.'
Book cover of 'The Nothing Month' by Cat Miller, featuring black clock hands on an orange background with phrases 'No contact,' 'Thirty days off-grid,' and 'No way to call for help.'
Book cover of 'The Husband' by Darren O'Sullivan featuring a silhouette of a man holding a baby, standing in an open doorway, with a teddy bear on the ground.

  • “She was instrumental in The Dinner Lady Detectives becoming the series it is. It never would have happened without Siân and her endless hard work. If you are looking for an editor with bags of talent and who is also a lovely person then Siân is your go-to!”

    Hannah Hendy

  • "Siân is a meticulous and inspiring editor whose outstanding work has always elevated my manuscripts. She has an amazing eye for detail and the commercial elements of a story."

    Sarah Ward

  • "Siân is a brilliant editor. She's great at pinpointing the strengths and weaknesses of a manuscript and giving detailed feedback on how to make the best things shine and resolve the issues. Working with Siân made me feel really confident that I was telling the best story I could – she really understood what I wanted to do and helped me get there."

    Anna Britton

  • “I had the pleasure of working with Siân for my first novel with Joffe Books. Her ability to hone in on the elements that create tension and suspense allowed me to take my novel to the next level. She is also very easy to work with, answering questions and adding to a safe environment where creativity can thrive. I’m beyond thrilled with the product we created together, and anyone would be lucky to work with her.”

    S. C. Shannon

Book cover for "Dark Road Home" by Sheila Bugler, featuring a scenic road leading to a house with dramatic skies, and text 'Deadly secrets live in dying towns'."
Book cover of 'Hers to Have and to Hold' by June Francis featuring a woman in vintage clothing with a street and houses in the background, plus a plane and a lamp post.
Cover of 'Old Evils' by Alex Walters, a DI Annie Delamere novel, featuring a dark night snowy scene with an illuminated house and street lamp.
Book cover for 'Win or Die' by Darren O'Sullivan featuring a shattered glass design with a bloodstain, black background, and yellow and white text.
Cover of "What the Dead Want" by MJ Lee featuring a silhouette of a man walking down a street at night, with cars parked on either side and street lamps illuminating the scene.
"Death Rites" book cover by Sarah Ward, featuring torn red rope on a yellow background with blurb by Michael Wood.
Book cover of "Anything for You" by Sophie McKenzie, featuring a close-up of a woman's face with long hair and blue eyes, with the title in bold pink letters and an accompanying quote about love.

Let’s work together!