Who actually sits above Ironworks and Testbed?
On paper they read like new additions to the British warehouse circuit: Ironworks in London, a 7,000-capacity room flagged by DJ Mag as one of the capital's biggest new spaces, and Testbed in Leeds. Follow the company filings, as a Change Underground investigation did in late June, and the line keeps climbing. AMAAD, the promoter steering Ironworks London, sits under Eventim Live UK, a subsidiary of CTS Eventim, the live-entertainment group listed on the Frankfurt exchange and headquartered in Bremen. In June 2025 AMAAD was restructured as Amaad Holdings Ltd; in June 2026 that holding company moved its registered office to Walworth Town Hall in south London.
Why does the ticketing piece matter?
Because the same group already owns the till. In June 2024 CTS Eventim bought See Tickets, one of the UK's largest ticketing platforms, for a reported 255 million pounds. Put the promoter, the venue and the ticketing system inside one corporate family and you no longer just sell a night out, you capture it: who bought, when, for how much, how often, and what they came back for. A booker calls that vertical integration. A raver standing in a 7,000-capacity warehouse is unlikely to know that the door, the line-up and the e-ticket all report, eventually, to the same balance sheet.
The word 'underground' is doing a lot of work on a flyer when the venue, the promoter and the ticket all roll up to a company on the Frankfurt exchange.
Is 'underground' just branding now?
There is nothing illegal here, and big rooms have always needed big money. The honest objection is to the costume. Selling a stock-exchange-backed, 7,000-capacity operation with the language and aesthetics of a squat-party scene is the move worth naming. None of the companies named have to hide anything; the filings are public. The point is that the people on the dancefloor are rarely told, and the gap between the branding and the ownership is exactly where the trust gets spent.
