The Darts Regulation Authority has updated its transgender participation policy, drawing on a recent UK Supreme Court judgment that re-examines how “sex” is defined under equality law.
The Darts Regulation Authority (DRA) has revised its rules on transgender participation in women’s events, aligning eligibility with a legal interpretation of sex set out in a recent UK Supreme Court judgment.
The policy is also underpinned by a scientific review commissioned by the DRA, led by developmental biologist Dr Emma Hilton, which assessed whether physiological differences affect performance in darts.
The report concluded “various evidence streams indicate that females are unable to consistently compete with male players in darts,” citing both social and physical factors contributing to the gap.
The decision places darts alongside a growing number of sports reassessing category definitions, but with a notable distinction. Rather than centring solely on physiology or performance data, the DRA has anchored its policy in legal clarity, referencing the implications of the For Women Scotland Supreme Court judgment.
At the heart of that ruling is a question which extends far beyond sport: how terms such as “woman” and “sex” should be interpreted within the Equality Act 2010.
Legal interpretation moves into sport governance
The Supreme Court was explicit that it was not attempting to define gender in a societal sense. Instead, it framed its role narrowly as one of statutory interpretation, examining how Parliament intended the terms “man”, “woman” and “sex” to function within the Equality Act.
The judgment emphasised that legal definitions must be “clear and predictable” so organisations can apply them consistently in practice. For sport, where eligibility rules must be applied at scale across amateur and professional competition, that requirement for clarity carries operational weight.
The Court also underlined the Equality Act protects both women, based on sex, and transgender individuals, based on gender reassignment. The challenge, as framed in the ruling, is how those protections interact when defining categories that are inherently binary.
Performance debate moves beyond perception
Noa-Lynn van Leuven is a Dutch darts player who competes in Professional Darts Corporation (PDC) events. She was the first openly transgender person to compete in a televised darts tournament and the first to play at the PDC World Darts Championship, making her debut at the 2025 event.
Van Leuven has won six titles on the PDC Women’s Series, as well as a title on the 2024 PDC Challenge Tour. Following the DRA’s ruling, she took to X to announce her retirement.
I just got an email, apparently I just got retired. Not by choice but because I am longer allowed to compete, the DRA decided that trans women are no longer allowed in women’s events.”
“With just one decision, I am being told I don’t belong anymore. This isn’t just about me, it’s another huge hit for the trans community.”
The DRA’s review points to a range of physical characteristics that may influence elite-level performance, including “greater height, longer limbs, broader shoulders, more muscle mass, and stiffer tendons,” which it states can enhance reach, stability and throwing mechanics.
It also highlights differences in technique, arguing that a “combination of larger skeleton and advantageous biomechanics” allows male players to maximise forward lean and improve throwing accuracy. Additional factors identified include grip strength and motor control, with the report noting that greater hand and arm strength can delay fatigue in muscles responsible for release timing, supporting consistency over longer matches.
However, the report stops short of attributing performance differences to any single factor. Instead, it concludes that “multiple, small-magnitude sex differences accumulate to generate male advantage over females in darts,” rather than any one characteristic being decisive on its own.
From statute to selection criteria
The DRA’s decision suggests a shift in how governing bodies are approaching that interaction. Rather than attempting to balance competing claims on a case-by-case basis, the organisation has opted to ground its policy in a fixed legal interpretation.
This approach differs from earlier regulatory models, which often leaned on medical thresholds or testosterone limits to determine eligibility. Instead, the DRA’s framework reflects a growing view that category definitions may ultimately be shaped as much by legal structure as by scientific debate.
It also mirrors provisions already embedded within equality law itself. The Equality Act contains specific allowances for “gender-affected sport”, recognising that differences in strength, stamina or physique can justify separate categories where necessary for fair competition.
Darts is not alone in revisiting its rules. Several international federations have tightened or restructured eligibility criteria in recent years, often citing fairness and safety considerations.
What is different in this case is the explicit reliance on UK legal precedent. By referencing the Supreme Court’s interpretation, the DRA is effectively positioning its policy within a broader regulatory framework rather than presenting it as a standalone sporting judgment.
That may offer a degree of legal defensibility, particularly in a landscape where governing bodies face increasing scrutiny over how inclusion and fairness are balanced.
Commercial and regulatory implications
For the Professional Darts Corporation (PDC) and its partners, the decision also carries commercial considerations. Women’s competitions have become an increasingly important part of darts’ growth strategy, with dedicated tours and expanded broadcast coverage.
Clear eligibility rules, grounded in law, reduce ambiguity for sponsors, broadcasters and event organisers. They also provide a framework that can be consistently applied across jurisdictions, particularly as the sport continues to internationalise.
At the same time, the policy is likely to attract scrutiny from advocacy groups and could form part of a wider debate about how equality law is interpreted in practice.
The Supreme Court judgment itself acknowledged the sensitivity of the issue, noting the “strength of feeling” on all sides of the debate. Its focus, however, remained firmly on statutory coherence rather than social resolution.
