Banned baby names in the UK: full list of rules and cases where parents were told 'No'

According to the UK Deed Poll Office, while mums and dads generally have the freedom to call their children whatever they like, a list of strict rules means certain names will never make it onto a birth certificate.

The aim? To protect children from potential harm, ridicule, or confusion—and to make sure official documents stay clear and standardised.

So What Names Are Actually Banned?

The UK doesn’t publish an official list of banned baby names, but that doesn’t mean there aren’t rules. The UK Deed Poll Office confirms names may be rejected if they:

• Include offensive language or obscenity

• Contain symbols, numbers or punctuation marks

• Are too long or hard to pronounce

• Might mislead people, such as titles like “King” or “Doctor”

• Are deemed inappropriate or against public policy

In plain terms: anything that might get a child bullied, laughed at, or confused with a medical professional could be off the table.

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Real Names That Were Rejected

There have already been some headline-grabbing cases of baby names being rejected in the UK. These include:

• “Cyanide” – Banned for its direct link to poison

• “Martian” – Scrapped due to concerns about ridicule

• “King” – Rejected because it could be mistaken for a title

• “Princess” – Also barred for giving a misleading impression

The UK Deed Poll Office website says: “While we don’t have an official list of banned names, we assess applications on a case-by-case basis, and names that could cause a child harm or confusion will likely be rejected.”

Global Crackdown on Extreme Baby Names

The UK isn’t the only country keeping an eye on the baby name trend. Other nations including New Zealand, Germany, and Iceland have drawn similar lines in the sand.

In New Zealand, names like “Lucifer,” “4Real,” and “Anal” have all been banned, while Germany has outlawed names such as “Adolf Hitler” and “Osama Bin Laden.”

The Twins Named 'Cyanide' and 'Preacher'

One of the UK’s most talked-about baby name controversies involved a mother who wanted to call her newborn twins “Cyanide” and “Preacher.” While the courts allowed “Preacher” to stand, “Cyanide” was blocked.

The UK Deed Poll Office said the decision was based on the fact that Cyanide is known primarily as a deadly poison, making it “inappropriate and harmful.”

What Happens If Your Baby’s Name Gets Rejected?

If the General Register Office or local registrar refuses a baby name, parents must choose a different one. Birth certificates and even passports won’t be issued until a compliant name is selected.

The UK Deed Poll Office warns that even after registration, names that are found to breach the rules can be challenged in court—particularly if they affect the child’s welfare.

How to Pick a Name That’s Legal and Unique

To stay on the right side of the law, the UK Deed Poll Office advises that parents:

• Avoid offensive or rude language

• Don’t include symbols or numbers

• Keep it short and easy to spell

• Steer clear of official titles like “Lord” or “Sir”

And if you’re not sure, the Deed Poll Office offers plenty of resources and support to help families make the right call.

Final Thoughts

While the UK remains fairly liberal when it comes to baby names, not everything goes. The restrictions, say experts at the UK Deed Poll Office, are all about protecting kids from harm and avoiding chaos in official documents.

So if you’re thinking about giving your baby a unique name—just make sure it’s legal first.