Kneecap is also set to perform alongside Fontaines DC at a concert in Belfast next month, and their London performance will be their first since a successful show in Finsbury Park on July 5, 2025.

Supporters value Kneecap's outspoken stance on societal issues, praising their courage to address controversial topics despite facing censorship and legal challenges.

Several musicians, including Nadine Shah, have publicly declared their support for Kneecap during upcoming court proceedings, emphasizing solidarity with the band.

This rejection marks a significant change, as Kneecap has previously advertised on the London Tube multiple times without issues, raising questions about the motives behind the current ban.

Kneecap, a controversial rap group, announced that their advertisement for a concert at the OVO Arena Wembley was rejected by the London Underground, citing concerns over the poster's content which was deemed likely to cause serious offense.

The banned poster features their logo, a balaclava referencing paramilitary imagery from the Troubles in Northern Ireland, promoting their September 18, 2025, concert at the Wembley venue.

The controversy is linked to legal issues faced by band member Liam Og O hAnnaidh, who is scheduled to appear in court on August 20, 2025, on charges related to supporting a proscribed terrorist organization after displaying a Hezbollah flag at a 2024 concert.

Despite the legal troubles and the ban, the band has received public support from fellow musicians and fans, who rallied outside Westminster Magistrates' Court during Liam O hAnnaidh's previous court appearance.

The band has experienced both controversy and popularity, with recent performances at major festivals like Glastonbury and a quick sell-out at Glasgow's O2 venue, though some events like the TRNSMT festival were canceled due to police concerns.

Kneecap's outspoken political views, including opposition to the war in Gaza and support for Palestinian causes, have contributed to their contentious reputation and ongoing investigations.

The band has criticized the censorship efforts, suggesting that silencing their voice is part of a broader attempt to suppress dissent on sensitive issues.

Liam O hAnnaidh's court date on August 20, 2025, has garnered support from fellow musicians and fans, highlighting ongoing solidarity amid the legal and political controversies.