Labour's decision to ban trans women from acting as delegates at its women's conference in Liverpool has triggered significant backlash, with multiple unions, party members and activists planning to boycott or protest the event. The ban, decided by Labour's National Executive Committee in December following a Supreme Court ruling on biological sex, means trans women cannot participate in formal proceedings such as main hall speeches and policy debates. This has created considerable internal division within the party, with numerous unions that fund Labour—including Unison, Aslef, Usdaw and the Musicians' Union—announcing boycotts, citing a conflict with their pro-trans inclusion policies.

Labour cancelled the women's conference last year after legal advice following the Supreme Court ruling that "woman" means those born female. The party's current policy allows trans women to attend fringe events but excludes them from formal conference proceedings and means all-women shortlists can only include those born female. The boycotts present a significant financial concern for Labour, which relies heavily on union donations, whilst further complications arise from reports that party members from across Britain plan to hold major demonstrations outside the venue, with some councillors and potentially an MP set to attend the protests.