World Book Day is one of the most joyful days in the school year. Children turn up dressed as their favourite characters, parents scramble for costumes, and feeds fill up with photos, book recommendations and stories. For businesses, it's a brilliant chance to share something warm, local and genuinely fun.
Here are 25 World Book Day social media post ideas for UK businesses, whether you run a school, a nursery, a bookshop, a cafe, a shop or a service business, plus example captions, hashtags and a few things to be careful about.
When is World Book Day in the UK?
World Book Day in the UK and Ireland is usually held on the first Thursday in March. It's run by the charity World Book Day, which gives children a book token to swap for a free book or put towards another one. Elsewhere in the world, UNESCO's World Book and Copyright Day is on 23 April, but the UK moved its celebration to March so it doesn't clash with the Easter holidays.
- First Thursday in March
- Different from the 23 April date
- Start posting in February
Why it's worth posting about
World Book Day reaches almost every family with school-age children, and the build-up starts weeks before as parents plan costumes and schools share their plans. That makes it a great fit for schools, nurseries, bookshops and libraries, but it works for plenty of other businesses too: cafes and soft play centres running story sessions, fancy dress and clothing shops, toy shops, children's activity providers, and any brand that wants to show its human side by sharing what the team loves to read.
It's also in our free UK social media calendar, alongside 200+ other dates worth planning for.
Post ideas for the weeks before
Start around two weeks out. This is when parents start thinking about costumes and schools share their plans.
Share the date
Plenty of parents get caught out every year. A simple reminder post is helpful, gets shared in school group chats and earns you goodwill.
Post easy costume ideas
Quick, low-cost costume ideas using things people already have at home are a lifesaver for busy parents and get saved and shared.
Promote your costumes and accessories
Fancy dress, clothing and toy shops should show what's in stock early, with clear details on sizes, delivery and collection.
Announce a story time or event
Bookshops, libraries, cafes and soft play centres can host a reading session, a costume parade or a craft table. Share the details and post updates as places fill up.
Recommend books by age
A carousel of favourite reads for toddlers, younger children and older readers is genuinely useful. Bookshops and libraries can add a staff pick to each.
Explain the book token
Many parents don't know how the World Book Day token works. A simple explainer, especially if you're a bookshop that accepts it, is helpful and timely.
Behind the scenes prep
Show the window display going up, the costumes being made or the reading corner getting a makeover. It builds excitement and shows the care you put in.
Update your Google Business Profile
Add your World Book Day event, offer or opening hours there too, as people search locally for things to do. Here's why posting on your Google Business Profile matters.
Post ideas for World Book Day itself
Run a costume parade
Schools and nurseries can share a parade of costumes, with parental permission, and businesses can invite customers to share their little ones' outfits in the comments.
Show your team dressed up
Staff dressed as their favourite characters, with permission, is fun, human and one of the best performing posts of the day.
Share your team's favourite books
Ask everyone for their favourite childhood book and turn it into a carousel. It's easy to make and gets people reminiscing.
Ask a fun question
What was the first book you fell in love with? Which character would you be for a day? Questions like these get plenty of comments.
Post live from your event
Stories of a busy story time, a costume parade or a packed bookshop feel immediate and show people what they're missing.
Run a giveaway
Offer a book bundle, a voucher or a reading den makeover. Keep the rules simple and check each platform's competition rules first. Our guide to running a Facebook competition walks through it.
Spotlight a local author
A quick interview or shout out for an author in your area supports local talent and gives your post a strong community feel.
Celebrate the reading heroes
Give a shout out to teachers, teaching assistants, librarians and parents who read with children every day. It's warm and very shareable.
Post ideas for service and B2B businesses
You don't need to sell books or run a school to get involved. These work for trades, professional services and B2B brands.
Share a business book that changed things
Ask your founder or team for the book that shaped how they work. It's thoughtful, personal and works brilliantly on LinkedIn.
Build a team reading list
Pull together the books your team recommends for your industry. It positions you as knowledgeable and gives people something useful to save.
Support a local school
Donate books, sponsor a reading corner or volunteer for a story session, then share it with the school's permission. It's good for the community and your reputation.
Turn your expertise into a story
Accountants, trades and consultants can share a short, simple story of how they helped a customer. It's a fun way to join in on the theme.
Post ideas for after the day
Say thank you
A thank you the day after, ideally with a photo from the day, rounds things off nicely.
Share the highlights
A short reel or carousel of the best costumes and moments, with permission, shows how much fun you had and gives people a reason to join in next year.
Repost customer content
If customers tagged you in their World Book Day posts, share them with permission. It's free, authentic content.
Ask for reviews
People are at their most positive straight after a great night, so ask while it's fresh. Here's how to encourage more reviews.
Point people to Mother's Day
Mother's Day is just a few days later. A gentle teaser for your gift ideas or bookings keeps people following.
Example World Book Day captions
Copy these, swap in your own details and you're good to go.
World Book Day is coming soon, and we've got costumes sorted 📚
From wizards and pirates to animals and superheroes, there's something for every little bookworm.
Order by the end of February to make sure it arrives in time.
Tap the link in our bio to shop the full range.
Still no costume for tomorrow? Don't panic 😊
A stripy top, a cardboard crown or a pair of pyjamas can turn into a brilliant character in minutes.
Save this post for some easy last-minute ideas using things you already have at home.
Share it with a parent who needs it tonight.
Happy World Book Day from all of us ❤️
Our team has swapped the usual uniform for some of our favourite characters today.
We'd love to see what you're reading or who you've dressed as.
Tell us your all-time favourite book in the comments.
World Book Day hashtags
Use a few of the main ones and add a local hashtag for extra reach.
- #WorldBookDay
- #WorldBookDayCostume
- #ReadingForPleasure
- #KidsBooks
- #BookLovers
- #ShopLocal + your town
Tips to get more from it
Start early
Begin posting two weeks before. Parents plan and order costumes well ahead, and the last few days get very busy.
Get permission for photos of children
Only share photos of children with written consent from their parents or carers, and follow your school or nursery's safeguarding policy. Avoid full names and anything that shows where a child lives or goes to school.
Keep costumes affordable
Not every family can buy a new outfit. Sharing low-cost and homemade ideas alongside anything you sell keeps the tone inclusive.
Keep your call to action clear
Book, order, buy or share. Pick one per post. Here's how to choose the right call to action.
World Book Day FAQs
When is World Book Day in the UK?
World Book Day in the UK and Ireland is usually held on the first Thursday in March. Check the organiser's announced date before planning your campaign.
Why is UK World Book Day different from the international date?
UNESCO's World Book and Copyright Day is on 23 April, but the UK and Ireland celebrate in March so the day doesn't clash with the Easter holidays and children can join in at school.
When should I start posting about World Book Day?
Start around two weeks before with costume ideas, book recommendations and event details, post more often in the final few days, then follow up with a thank you afterwards.
Can I post photos of children in costume?
Only with written consent from their parents or carers. Schools and nurseries should follow their safeguarding policy and avoid sharing full names or identifying details.
Can 99social create my World Book Day posts?
Yes. 99social plans, designs, writes and schedules content for UK small businesses from £99+VAT a month, with key dates like this built in. See our social media management for small businesses.
