What is the difference between the oath and the affirmation?

The oath is a religious declaration where you swear by Almighty God. The affirmation is a non-religious alternative where you solemnly declare and affirm without reference to God. Both are legally identical and equally valid. You choose whichever is appropriate for your beliefs.

Can I change my mind about which one to take on the day?

Yes. You can change your mind at any point before or even during the ceremony. The ceremony official will ask which you prefer and accommodate your choice. There is no requirement to notify anyone in advance.

Do I need to bring a holy book for the oath?

No. The ceremony venue will have the most common holy books available, including the Bible, Quran, Torah, and others. If your faith uses a specific text that may not be commonly available, you are welcome to bring your own. If you choose the affirmation, no holy book is needed.

Is the affirmation less valid than the oath?

Absolutely not. The oath and the affirmation have exactly the same legal standing. Neither is considered more or less valid. The choice is entirely personal and based on your own beliefs and preferences. The Home Office makes no distinction between the two.

Oath vs Affirmation at Your Citizenship Ceremony

Every new British citizen must make a declaration of allegiance at their ceremony. The oath is a religious declaration swearing by God, while the affirmation is a secular alternative. Both are legally identical. This guide covers the exact wording, how to choose, and what to expect.

Why You Must Make a Declaration

British nationality law requires all adults who become British citizens through naturalisation or registration to make a declaration of allegiance to the Crown. This is a legal requirement under the British Nationality Act 1981. Without making this declaration at a citizenship ceremony, you cannot complete the process and receive your certificate.

You have two options: the oath of allegiance (religious) or the affirmation of allegiance (non-religious). Both fulfil the same legal requirement, and the choice is entirely yours.

The Oath of Allegiance

The oath is the religious version of the declaration. The exact wording is:

"I, [your full name], swear by Almighty God that, on becoming a British citizen, I will be faithful and bear true allegiance to His Majesty King Charles the Third, His Heirs and Successors according to law."

When taking the oath, you may hold a holy book of your faith. The ceremony venue will typically have copies of the Bible, Quran, Torah, Bhagavad Gita, and Guru Granth Sahib available. If your faith uses a different text, you may bring your own.

The oath is suitable for people of any religious faith who are comfortable swearing by God. It is not specific to any one religion.

The Affirmation of Allegiance

The affirmation is the non-religious alternative. The exact wording is:

"I, [your full name], do solemnly, sincerely and truly declare and affirm that, on becoming a British citizen, I will be faithful and bear true allegiance to His Majesty King Charles the Third, His Heirs and Successors according to law."

No holy book is used. You simply stand and make the declaration. The affirmation is suitable for people of no faith, people who prefer a secular declaration, or anyone who does not wish to swear by God for any reason.

The Citizenship Pledge

After either the oath or the affirmation, every new citizen makes the same citizenship pledge:

"I will give my loyalty to the United Kingdom and respect its rights and freedoms. I will uphold its democratic values. I will observe its laws faithfully and fulfil my duties and obligations as a British citizen."

The pledge is the same for everyone regardless of whether they took the oath or the affirmation. It is not religious in nature.

How to Choose

The choice between the oath and the affirmation is entirely personal. Here are some factors that may help you decide:

If you are religious and comfortable swearing by God, the oath may feel more meaningful and natural to you.
If you are not religious or prefer a secular declaration, the affirmation is the appropriate choice.
If you are religious but uncomfortable swearing oaths, some faiths discourage or prohibit oath-taking. In this case, the affirmation may be more appropriate even for religious people.
If you are unsure, you can decide on the day. There is no need to commit in advance.

Nobody will judge your choice. Ceremony officials are experienced and respect whichever option you select.

What Happens at the Ceremony

At most group ceremonies, the ceremony official will separate new citizens into two groups: those taking the oath and those making the affirmation. Each group says their declaration together. Then everyone makes the pledge together.

At a private ceremony, the process is simpler. The official will ask which you prefer and you will make your declaration individually.

In both cases, the official will read the words slowly and clearly, and you repeat them. You do not need to memorise anything. Cards with the wording are usually provided so you can read along.

For more on what to expect at the ceremony, see our full citizenship ceremony guide.

Language Considerations

The oath, affirmation, and pledge are all made in English. If you have difficulty with English, the ceremony official may speak slowly and clearly to help you follow along. In some areas, especially where there is a large community speaking a particular language, translations may be available for reference, but the declaration itself is always in English.

You will have already passed the English language requirement as part of your citizenship application, so the wording should be manageable.

Historical Context

Citizenship ceremonies were introduced in the UK in 2004. Before that, new citizens simply received their certificates by post. The ceremonies were created to make becoming a citizen a more meaningful and memorable event.

The option to make an affirmation instead of an oath reflects the UK's commitment to religious freedom and the principle that no one should be required to make a religious declaration. This option has been available since ceremonies began and is used by a significant proportion of new citizens.

After the Declaration

Once you have made your declaration (whether oath or affirmation) and the pledge, the ceremony continues with the national anthem and the presentation of certificates. Your certificate will not indicate whether you took the oath or the affirmation. Both result in exactly the same legal status.

After receiving your certificate, you can proceed to apply for a British passport, register to vote, and enjoy all the rights of British citizenship.

Further Resources

Read the full ceremony guidance on GOV.UK. For the full requirements, see our citizenship requirements guide. For information on what happens after the ceremony, see our guides on getting a passport, NHS access, and right to work.