TBA is a term that often stands for "To Be Announced," but within the UK nightclub scene, TBA is sometimes used as a moniker for popup or semi-permanent club spaces, known for their underground feel and emphasis on cutting-edge electronic music. The original TBA UK event series began in the early 2010s, emerging in London's rapidly evolving nightlife landscape as warehouse and industrial spaces were converted into temporary venues. TBA quickly gained a reputation for championing the avant-garde, focusing on inclusivity, and offering a sanctuary for lovers of house, techno, and experimental electronic genres.

The venue's ethos centered on music first, often withholding information about the DJ lineup, location, and exact opening times until just before the event—creating an air of mystery that fueled its word-of-mouth appeal. Over time, TBA migrated through various locations in London, from hidden Dalston basements to expansive warehouses in Hackney Wick, adapting to the city's shifting licensing laws and gentrification pressures. Despite these changes, the essence of TBA endured: intimate, immersive parties with a dedicated crowd and a progressive musical agenda.

The club is widely regarded as a hub for creative experimentation, and its influence has extended internationally, inspiring similar concepts in cities like Berlin and New York. Beyond its local impact, TBA is recognized for providing a crucial platform for both rising talent and established artists who seek unconventional, receptive audiences. Its sound systems, stripped-back aesthetic, and unfiltered atmosphere have made it a cult favorite among clubgoers and industry insiders alike.

Notable artists who have performed at TBA venues or events in the UK include international acts such as Ben UFO, Helena Hauff, DVS1, and Nicolas Lutz, as well as influential local talents like Midland, Shanti Celeste, Call Super, and Peach.