Marriage between First Cousins

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Wednesday 18th June 2025

(1 day, 22 hours ago)

Westminster Hall
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Alex Davies-Jones Portrait The Parliamentary Under-Secretary of State for Justice (Alex Davies-Jones)
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It is a pleasure to serve under your chairship, Dame Siobhain. I thank the right hon. Member for Basildon and Billericay (Mr Holden) for securing this important debate and commend him for all his brilliant work to support women, in the previous Parliament and going forward. I know that he feels strongly about this issue and, as he said, has introduced a private Member’s Bill on the subject. It goes without saying that it is a sensitive and complex issue, which requires nuance and respect. I thank him for the way he presented his arguments today.

It is important first to understand the current law around marriage. In England and Wales, marriage law is governed primarily by the Marriage Act 1949, which outlines the conditions under which a marriage is considered void, meaning not legally valid. That includes situations where one party is under 18 or where one party is serving a whole-life order in prison. Under the Act, marriages between individuals who are considered too closely related are also considered void. Those relationships fall within so-called prohibited degrees of relationship, which include close blood relations, such as siblings, and certain step relations, such as someone marrying the child of a former spouse.

As we all know, the prohibited degrees of relationship in the 1949 Act do not include first cousins. To understand why that exception exists, it is helpful to consider the context. As the right hon. Member mentioned when he introduced his Bill and in his speech today, marriage between first cousins has been permitted since Henry VIII changed the law in order to marry Anne Boleyn’s cousin, Catherine Howard.

The list of relationships that are legally too close for marriage—prohibited degrees—has been around for centuries. It was first officially written into law in the Marriage Act 1835. It was updated by various laws passed between 1907 and 1931, and was eventually brought together into the 1949 Act. The law has continued to evolve since then; for example, the Children Act 1975 added a prohibition on marriages between adoptive parents and their adopted children.

There have been studies that seem to reinforce our anecdotal understanding that individuals from communities are increasingly moving away from traditional practices and opting for relationships outside their extended families. This shift reflects a broader trend of integration into wider society, alongside awareness of certain health and societal implications that are associated, as the right hon. Member mentioned, with cousin marriage.

Let me address the right hon. Member’s concerns about those health risks, and specifically the risk of congenital disease in children. There is a continued debate about the genetic risks involved in first cousin marriages. As my noble Friend Baroness Merron highlighted in the other place earlier this year, the NHS offers support for families who may be at higher risk of genetic abnormalities. The Government also understand the importance of having better data in this area, which is why the National Congenital Anomaly and Rare Disease Registration Service collects and analyses data to support doctors, charities and policymakers to improve treatments and care in England. NHS England has also recently published guidance to improve recording of national data on closely related couples.

I listened carefully to the right hon. Member’s argument that banning first cousin marriage could promote community integration. We recognise that the practice is permitted in some faith communities, while it is not permitted in others. As I have said, this is a complex and sensitive area of law, and I am happy to continue to engage with him on it as the Government consider the issue more broadly.

The right hon. Member also suggested that banning first cousin marriage could help to reduce forced marriages. Let me be absolutely clear: forced marriage is a serious human rights violation. It is illegal and carries a maximum prison sentence of up to seven years. It is a complex form of honour or culture-based abuse, and our response must be comprehensive, with a focus on preventing such crimes, on supporting and protecting survivors and those at risk, and on bringing perpetrators to justice.

Tackling forced marriage is a key part of the Government’s mission to halve violence against women and girls within a decade. The forced marriage unit, which is a joint effort between the Home Office and the Foreign Office, works tirelessly to combat forced marriage, both at home and abroad. The unit provides a vital range of materials, including free e-learning. Last year alone, over 5,800 professionals, such as registrars, completed that training. A new forced marriage resource pack has also been launched to help raise awareness of forced marriage among professionals.

I recognise that there is a lot of interest across the House in bringing forward a number of changes to weddings law more generally. I know that many Members are keen to see changes brought forward quickly, but it is important that any such changes are made in the round. Just last week, during a debate on humanist marriage, I explained to a packed Westminster Hall that it is not possible for the Government simply to ignore the Law Commission’s 2022 report. We cannot ignore the fact that that report identified a number of complex and significant issues within the current legal framework.

Richard Holden Portrait Mr Holden
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May I take the Minister back to a point she made about forced marriage? I understand her commitment, and that of the Government, on this issue, but surely she must recognise that when we are looking at a rate of first cousin marriages of between one in 200 and one in 500 in normal society, but a rate of one in two in certain communities, real questions must be asked. How can anybody in those communities really speak out about that issue and the concerns around forced marriage? It is so clear that the family ties are so strong, generation after generation, that they make it almost impossible for people to come forward.

Alex Davies-Jones Portrait Alex Davies-Jones
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I totally agree with the right hon. Member. He makes a very powerful point, which speaks to why we need to look at this issue very carefully. With certain groups engaging in this practice, we cannot just have a knee-jerk reaction; he mentioned that in his speech. Others are calling for me to have a knee-jerk reaction on humanist weddings, for example, and to just quickly lay a statutory instrument to make that change possible. I am not about creating piecemeal legislation in an area that is very complex.

I want to reassure the right hon. Member that the Government are not ignoring this issue. We are considering it deeply and in the round, but it is responsible of us to consider it carefully and with the appropriate communities, which he mentioned, so that we get a full picture of the situation.

That brings me to the central proposal in this debate, which is to ban first cousin marriage. It is worth noting that during the past 14 years, when the prevalence of first cousin marriage was higher than it is now, the previous Government, in which the right hon. Member was a Minister, took no steps to introduce a ban. As I have said, first cousin marriage is complex and sensitive, and this Government are considering it with the seriousness that it rightly deserves.

The right hon. Member will also be aware that in 2022, when the Law Commission published its comprehensive review of weddings law, the previous Government had ample opportunity to raise the issue of first cousin marriage in response to that report, but they chose not to respond at all. In the report, the Law Commission set out a number of issues with marriage law, including inconsistency and unfairness across different groups and faith communities. We are considering the report and the wider issues of weddings law, including first cousin marriage, and I want to put that on record today.

My officials are working hard on weddings law reform, as am I, and an update from the Government on our position will come very soon. I am happy to continue to engage with the right hon. Member and any other Members or those outside this place who want to discuss this matter further as we prepare our plan for weddings reform.

Question put and agreed to.