0203 302 4146
Printed and included with your order
Free Delivery Over £30
Next Day Delivery (Mon-Sat)
Made & Shipped in UK
Details
Make their 18th birthday feel official with a personalised 18th birthday card styled like a humorous warning sign. The design pairs a yellow triangle and exclamation mark with a red circular sign reading “WARNING – NO RESTRICTIONS APPLY”, topped with an “APPROVED” stamp.
Below the signs, the card reads “HAPPY 18TH BIRTHDAY – OFFICIALLY AN ADULT” and displays the recipient’s name. Add an optional printed message inside to give your birthday wishes a personal touch.
How to Personalise Your 18th Birthday Warning Sign Card
- Enter a name: Add the recipient’s name for the front of the card.
- Add an inside message: Include an optional message to be printed inside.
- Check your details: Review the spelling, punctuation and message before ordering.
A Milestone Birthday with a Humorous Warning
The bold road-sign artwork gives this 18th birthday card a playful, official-looking feel. Its “NO RESTRICTIONS APPLY” message and “OFFICIALLY AN ADULT” wording make light of the big step into adulthood.
The recipient’s name sits beneath the printed birthday greeting, making the design feel made for their milestone. It’s a cheerful way to congratulate an 18-year-old and add a smile to their birthday celebrations.
Who Is This Card For?
This personalised birthday card is suited to friends and family celebrating a new adult.
- A friend turning 18
- A son or daughter reaching their milestone birthday
- A brother or sister celebrating their 18th
- A relative who appreciates a playful birthday greeting
Perfect for an 18th Birthday
Give this card to mark someone’s 18th birthday and celebrate their official arrival into adulthood. The warning-sign joke keeps the greeting light-hearted, while the personalised name and optional inside message let you make your birthday wishes more individual.
Why They’ll Love It
- A distinctive sign design: The warning symbols make their milestone birthday greeting stand out.
- A personal front: Their name appears beneath the birthday message.
- Room for your own words: Add an optional printed message inside.
- A playful milestone greeting: The wording celebrates turning 18 with a touch of humour.
Key Features
- ✔ Personalised 18th birthday greeting card
- ✔ Warning-sign artwork with “APPROVED” stamp
- ✔ Printed wording: “HAPPY 18TH BIRTHDAY – OFFICIALLY AN ADULT”
- ✔ Recipient’s name added to the front
- ✔ Optional printed message inside
- ✔ Made to order
- ✔ Printed on premium stock
- ✔ A6, A5 and A4 sizes
- ✔ 300–350 gsm card stock with vibrant print
- ✔ Envelope included
A Birthday Greeting They Can Keep
Mark their 18th with a card that puts the joke and their name right on the front. Add a few personal words inside to make your congratulations feel like theirs alone, and give them a memento of the day they officially became an adult.
Please Note
Check the name and any inside message carefully before ordering. Colours may vary slightly between your screen and the printed card.
Add their name and optional message, then order this personalised 18th birthday card for their big day.
Shipping
We take pride in producing and dispatching every personalised order as quickly as possible. As our products are custom made, delivery times include both production and shipping.
We offer Standard and Express UK delivery, with selected products also available for Next Day Delivery when ordered by 2pm. Estimated dispatch and delivery times are shown on each product page and may vary for made-to-order items or during busy periods.
All orders are sent with tracking, so you can follow your parcel once it has been dispatched.
Free UK delivery is available on orders over £30.
Please note that courier or postal delays can occasionally occur outside our control, but we’ll always do our best to help resolve any delivery issues quickly.
Returns
We want you to love your order. If your item arrives damaged, incorrect or faulty, please contact us within 72 hours of delivery and include clear photos so our team can arrange a quick replacement or resolution.
Non-personalised items may be returned within 7 days of delivery if you change your mind. The item must be in its original packaging and unused, and you will be responsible for return postage costs.
Because all personalised and custom-made products are created just for you, we’re unable to accept returns or offer refunds on these items unless they arrive faulty or damaged. This also applies to perishable goods such as sweets or chocolates.
Every return must be approved by our customer support team before sending items back, and any unauthorised returns may not be processed.
Read our full Returns Policy →
