Experts in Book Publishing Public Relations


Founded in 2023, we are a small, agile and driven communications agency that specialises in representing publishers, authors and their books.

With a background in delivering award-winning publicity for over 15 years, we represent both fiction and non-fiction authors at all stages of their journey; from launching their debut to building their brand.

Open to managing publicity for writers in all genres, we offer tailor-made PR services led by our clients' needs. We can direct complete publicity campaigns, support in-house teams, organise events, coach authors, and much more.

We pride ourselves on an approach that is always communicative, collaborative and delivers results. Our mission is to take writers' careers to the next level and create bestsellers.

In Autumn 2023, we represented national treasure Joe Wicks for his cookery and lifestyle book, Feel Good in 15, as well as No.1 International bestselling royal biographer, Omid Scobie.  This Spring, we've been working with best-selling crime-thriller writers including B.A. Paris, Mari Hannah, Neil Lancaster and Louise Hare, as well as with up-and-coming writers such as Leeanne O'Donnell, Lynda Marron and Chioma Okereke. 

Praise for Calder Publicity 

‘Sophie is an industry-leading publicist – results-driven with a huge focus on author care. I’m so impressed by the campaigns she has delivered for Bonnier, and I know our authors have been suitably delighted with Sophie’s work on their books. I wouldn’t hesitate to work with Sophie again.’- Lucy Richardson, Publicity Director, Bonnier Books 

‘I couldn’t recommend Sophie enough. She is an exceptional and consistent publicist: creative, dedicated, and always delivers results. She provides exceptional author care and is brilliant at dealing with internal stakeholders too.’ - Leanne Oliver, Publicity Director, Orion Publishing Group

‘Sophie is consistently creative, dynamic and thorough with her campaigns. A consummate professional, she leaves no stone unturned, and the breadth of coverage she achieves is unparalleled. She is a safe pair of hands that I trust with all levels of campaign.’ - Emily Burns, Publicity Director, HarperCollins 

'The best in the business’ - Omid Scobie, author of Endgame 

'A real pro: motivated, unflappable and well-connected. I couldn’t believe her work ethic and what she managed to achieve.’ - Mari Hannah, author of The Longest Goodbye

‘Cheerful, efficient, and an absolute joy to work with – every time Sophie’s name popped up in my inbox I knew something great was about to happen.’- Lynda Marron, author of Last Chance in Paris 

'Proactive, professional, and hugely supportive, Sophie has helped me with my author branding and with getting my latest book out there. I couldn’t have done it without her.'- B.A .Paris, author of The Guest 

‘Sophie took my book campaign and elevated it way beyond any expectations I could have had. She was communicative, inventive, and relentless...I truly hope she handles all my future campaigns.’ - Neil Lancaster, author of The Devil You Know 
'I'll be forever grateful for the work Sophie put into our campaign. To say she went over and beyond is an understatement. Communicative, kind, and persistent; it honestly wouldn't have been the same without her tremendous effort.'- Chioma Okereke, author of Water Baby 




Praise for campaigns by Sophie Calder

Sophie Calder,

Sophie is an industry-leading publicist who has worked in public relations within the book publishing industry for 15 years, most recently at HarperCollins Publishers. Her work has appeared on over 20 shortlists for book industry awards, with her campaign for vegan cookbook, BOSH!, winning both Publishers’ Publicity Circle and Future Book Awards.

She is proud to have represented Sunday Times bestselling fiction authors such as Adele Parks, B A Paris, Sarah Morgan, Ben Aaronovitch, Joanne Harris, Joe Hill, Stephen King and Brandon Sanderson. She has also directed PR for household names including Joe Wicks, Sarah Ferguson Duchess of York, Claudia Winkleman, Susannah Constantine, June Sarpong, Tom Daley, Tim Minchin and Jonathan Ross. She co-created the UK's first ever hybrid book event, The Gollancz Festival, which won the Hachette PR and Marketing Award.

Sophie is motivated by expanding her knowledge-base, growing her network, and by sharing those learnings and connections with others. She’s chaired the Publishers’ Publicly Circle, was selected as a future leader at HarperCollins Publishers and has spoken at London Book Fair. She's on X, Instagram, and LinkedIn @calderpublicity.





 Some campaigns we've worked on

Feel Good Food by Joe Wicks, HQ, 2022

Feel Good Food by Joe Wicks, HQ, 2022

Positioned health and fitness coach Joe Wicks as an expert in mental wellbeing. With 13 broadcast interviews, a media reach of over a billion, and a national tour, Feel Good Food was a UK industry Number 1 bestseller and the fastest and highest selling new cookbook of the year.

Her Heart for a Compass by Sarah, Duchess of York, Mills & Boon, 2021

Her Heart for a Compass by Sarah, Duchess of York, Mills & Boon, 2021

Managed the publicity for Sarah Ferguson, Duchess of York’s first novel for adults. With sales driven by 11 press interviews, over 20 reviews, and countless news stories, it was a top ten Sunday Times bestseller. 

Finding Freedom by Omid Scobie and Carolyn Durand, HQ, 2020

Finding Freedom by Omid Scobie and Carolyn Durand, HQ, 2020

Handled UK media relations for the biography of the Duke and Duchess of Sussex. The book was a UK industry Number 1 bestseller. My campaign for it was highly commended at the Publishers' Publicity Circle Awards as ‘a shining example’.

Adele Parks, HQ, 2018 - 2021

Adele Parks, HQ, 2018 - 2021

Devised a new PR approach that helped propel Adele Parks to the Sunday Times Number 1 spot. While managing her PR for three years, highlights included securing multiple high profile TV, radio and podcast appearances, a book review column at Platinum Magazine as well as press, talks and workshops in association with The Sun .

Diversify by June Sarpong, HQ, 2017

Diversify by June Sarpong, HQ, 2017

Directed the PR for June Sarpong's award-winning first book. The campaign, which included over 20 broadcast interviews, supported June in her journey to become one of the world's leading DE&I executives.

PR campaign services:

Publicity campaign design and execution across broadcast, press and digital media channels  
Supporting in-house campaign teams with additional media channels or PR activities
Long term author brand and reputation management, including pre and post-publication
Author coaching, including generating ideas for PR content and talking points
Events management including book tours, launch parties, talk events, workshops and book signings
Blogger and influencer campaigns
Social media and newsletter management 


Consultancy services:

Crisis communications planning
Designing author questionnaires
Publicity timelines and critical paths 
PR best practice guidance
Campaign prioritisation 
Author training and briefs 

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