What is an Annulment and What Are the Legal Grounds in England and Wales

In the intricate tapestry of matrimonial law, annulment stands as a unique remedy for those who find themselves wanting to declare their marriage null and void. Unlike divorce, which dissolves a valid marriage, an annulment declares that the marriage was never valid from the outset. This blog will explore what an annulment is, the circumstances under which one can seek an annulment, and the legal grounds for annulment in England and Wales.

Understanding Annulment

At its core, annulment is a legal declaration that a marriage is invalid. When a marriage is annulled, it is as if it never occurred. This can be particularly significant for parties who wish to remarry, as an annulment clears the way legally and can remove any rights or obligations that would arise from a traditional divorce.

People often seek annulment for a variety of reasons, from issues related to consent to matters of legality. Understanding annulment involves delving into the various grounds under which a marriage can be declared void.

Legal Grounds for Annulment in England and Wales

The grounds for annulment are clearly defined under English law. The grounds can be broadly categorised into two sections: those that render the marriage void and those that render it voidable. Each category has its own unique criteria.

1. Void Marriages

A void marriage is one that is considered invalid from the very beginning. Under the Marriage Act 1836 and later amendments, specific circumstances render a marriage void. Here are the primary grounds:

– Lack of Capacity: If either party lacked the mental capacity to understand the nature of marriage at the time of the ceremony, the marriage can be annulled. This may include those suffering from severe mental illness or cognitive impairment.

– Underage Marriage: A marriage is void if either party was below the legal age to marry. In England and Wales, the minimum legal age is 16. However, individuals aged 16 or 17 must have parental consent to marry.

– Bigamy: If one party is already married to someone else at the time of the second marriage, the second marriage is void. This is applicable even if the parties were unaware of the previous marriage.

– Prohibited Degrees of Relationship: If the parties are closely related (such as siblings or parent and child), the marriage is void. The law prohibits marriages between certain relatives to prevent incestuous relationships.

– Lack of Formalities: If the marriage did not adhere to necessary legal formalities, it may be rendered void. For instance, if the couple did not obtain a marriage licence or did not marry in a recognised venue, it might be void.

2. Voidable Marriages

A voidable marriage is one that is technically valid but can be annulled under specific circumstances as highlighted in the Matrimonial Causes Act 1973. The major grounds for a voidable marriage are:

– Lack of Consent: If one party did not genuinely consent to the marriage due to duress, coercion, or misrepresentation, they may seek an annulment. This may occur, for instance, if a party was forced into marriage against their will.

– Incapacity at the Time of Marriage: If either party was incapable of entering the marriage at the time (through intoxication or mental incapacity) but later regains capacity, the marriage is voidable. An example of this might include a scenario in which one party was significantly under the influence of drugs or alcohol during the ceremony.

– Non-Consummation: A marriage can be annulled if it has not been consummated (i.e., not completed through sexual intercourse) owing to the inability of one party. However, mere refusal or inability to consummate after the wedding can render the marriage voidable only.

– Sexually Transmitted Infections: If one party suffers from a sexually transmitted infection and the other party was unaware of it at the time of the marriage, this can be grounds for annulment.

– Pregnancy by Another Person: If a woman is pregnant by another person at the time of marriage and the husband is unaware of this fact, he can seek annulment.

The Process of Annulment

If a party believes they have grounds for an annulment, they must apply to the court for a declaration of nullity. The process is as follows:

1. Application Submission: The individual seeking the annulment must complete and submit a petition for nullity to the family court. This includes providing details of grounds on which the annulment is being sought.

2. Service of Application: The application must be served on the other party involved in the marriage. Proper legal procedures must be followed to ensure that the other party is informed.

3. Court Hearing: A court hearing will be scheduled, during which both parties can present their case. Evidence supporting the grounds for annulment will be examined.

4. Court Decision: If the court agrees with the grounds for annulment, they will issue a decree nisi, followed by a decree absolute to finalise the annulment.

Conclusion

Annulment is a significant legal avenue for those whose marriages are invalid or have been entered into under misleading or unfortunate circumstances. Understanding the legal grounds for annulment provides clarity for individuals navigating challenging marital situations in England and Wales.

Whether due to lack of capacity, bigamy, or coercion, seeking an annulment can be a critical step toward reclaiming oneself and moving forward in life. If you believe you may have grounds for an annulment, consulting with a legal expert is advisable to ensure that you understand your rights and navigate the process smoothly. Ultimately, everyone deserves the opportunity to embrace a future that reflects their desires, free from legal ties that should never have been formed in the first place.

At Alexander JLO we have many years of experience of dealing with all aspects of family law and will be happy to discuss your case in a free no obligation consultation. Why not call us on +44 (0)20 7537 7000, email us at info@london-law.co.uk or get in touch via the contact us button and see what we can do for you?

This blog was prepared by Alexander JLO’s senior partner, Peter Johnson on 1st December 2025 and is correct at the time of publication. With decades of experience in almost all areas of law Peter is happy to assist with any legal issue that you have. He is widely regarded as one of London’s leading divorce lawyers. His profile on the independent Review Solicitor website can be found Here