The Women’s Institute (WI) will stop accepting transgender women as members from April 2026, bringing an end to a policy that had remained largely unchanged for more than forty years. The decision comes in the wake of a landmark Supreme Court ruling that reshapes how UK equality law defines the term “woman.”
WI chief executive Melissa Green called the move one taken “with utmost regret and sadness,” stressing that the organisation had “no choice” under the new legal interpretation. For one of Britain’s most established women’s groups, the shift marks a turning point that could influence other organisations built around single-sex membership.
What exactly did the Supreme Court decide?
In April 2025, the Supreme Court issued a significant judgment in For Women Scotland Ltd v The Scottish Ministers. The ruling clarified that, within the Equality Act 2010, the terms “woman” and “sex” refer exclusively to biological sex.
One practical consequence stands out: Gender Recognition Certificates documents that previously allowed transgender people to be legally recognised in their acquired gender no longer change someone’s sex for the purposes of the Equality Act.
The ruling applies across England, Scotland and Wales. Organisations that use the Act’s provisions to justify single-sex membership or spaces must now ensure their policies align with this biological definition. According to legal analysts, the judgment is already prompting reviews among charities, clubs and service providers that rely on single-sex exemptions.
How is the Women’s Institute changing its membership rules?
Beginning in April 2026, the WI will restrict membership to individuals who were registered female at birth. Existing transgender members will not be removed immediately, but their subscriptions will simply expire at the end of the membership year with no option to renew.
The WI has not published figures on the number of transgender women currently involved in the organisation. Despite the new restriction, the WI maintains its longstanding internal position that “transgender women are women,” illustrating a growing tension between the organisation’s inclusive ethos and its legal obligations.
Green acknowledged that the change will cause “disappointment and distress,” and the WI has stated that it intends to offer support to members affected by the shift.
What are WI Sisterhood Groups and who can join them?
To preserve an element of inclusivity, the WI will introduce a national network of WI Sisterhood Groups from April 2026. These groups will operate outside formal membership structures and will be open to all people, including transgender women.
They are designed as informal, community-focused spaces: monthly meetings, learning activities, social gatherings, and opportunities for shared projects. Within these settings, the organisation says it will continue to recognise transgender women as women.
In practice, the Sisterhood Groups function as a compromise an attempt to maintain participation while complying with a stricter legal definition of “woman.”
Are other organisations making similar changes?
Yes. The WI’s announcement follows a comparable decision by Girlguiding, made on 2 December 2025. The youth organisation, which has around 300,000 members, confirmed that transgender girls will no longer be eligible to join as new members.
Both groups cited the same legal imperative: the need to comply with the Supreme Court’s interpretation of the Equality Act. The Equality and Human Rights Commission is expected to issue more detailed guidance, but organisations are already adjusting policies to avoid future challenges.
Sector observers anticipate further policy revisions across women’s charities, sports bodies and service providers in the coming months.
How are transgender rights groups responding?
Reactions from advocacy organisations have been swift and critical.
TransActual called the policy changes “an act of violence against vulnerable trans people,” while the Trans+ Solidarity Alliance condemned what it describes as a lack of clear government guidance. Many campaigners place responsibility on policymakers rather than on groups like the WI, arguing that organisations are being forced into legally difficult positions.
Individual testimonies underline the emotional impact. One 80-year-old transgender WI member described the institute as “the only place I’ve been treated as a woman with respect,” highlighting the personal significance of the spaces now being closed off.
Advocates warn that the ruling may leave transgender individuals without the community networks they have relied on for decades.
