Channel Tunnel competition plans hinge on depot access as Gemini Trains reveals Siemens–Uber partnership

The British start-up Gemini Trains has taken its most deliberate step yet towards launching new Channel Tunnel services, announcing Siemens Mobility as its preferred manufacturer and Rock Rail as its financial partner for a fleet of Velaro Novo trains. 

The move, revealed on 9 October 2025, forms part of Gemini’s plan to introduce cross-Channel services between London in the United Kingdom, Paris in France, Brussels in Belgium and Cologne in Germany, in partnership with Uber

Ticketing would be integrated into the Uber app, with trains co-branded accordingly, as the 30-year-old Channel Tunnel market prepares to open to competition for the first time.

The Velaro Novo, presented by Siemens as the next generation of its Velaro high-speed platform, follows earlier models such as Eurostar’s e320 fleet, already certified to operate through the Tunnel. Gemini describes the model as ideally suited to provide a reliable and high-quality service for the new connections.

Rock Rail, which has arranged nearly £6 billion in funding for passenger fleets in the UK and Germany, is expected to structure both equity and debt finance for the Gemini project. According to Gemini, the partnership with Uber, Siemens and Rock Rail represents a significant step towards running regular, competitively priced trains linking the UK with France and continental Europe.

Temple Mills International Depot

However, the plans remain uncertain pending a crucial ruling by the UK’s Office of Rail and Road (ORR). The regulator must decide whether new operators will be granted access to Temple Mills International Depot in East London — the only maintenance site in Britain certified to handle European-gauge high-speed trains. Without depot access, Gemini’s Siemens fleet remains theoretical, and the start-up is not alone in that position.

The announcement closely follows a similar declaration from Virgin Trains in August, which unveiled an exclusivity agreement with Alstom for twelve Avelia Stream trainsets. Virgin, too, stated that its plan was ready to proceed, backed by an estimated £700 million in equity. 

Yet both Virgin’s and Gemini’s statements are widely interpreted as strategic positioning ahead of the ORR’s decision, designed to demonstrate readiness and credibility before access rights are determined.

The ORR is expected to issue its ruling later this month. Current capacity at Temple Mills is thought to be sufficient for at most one additional operator, if any. Even if Gemini or Virgin were successful, it would take several years before any new trains could enter service. 

Designing, manufacturing, certifying and testing rolling stock for Channel Tunnel operations involves complex cross-border safety approvals in the UK, France and the EU.

Trenitalia

While Gemini and Virgin continue to court attention with announcements, Italy’s state-owned FS Group — which operates Trenitalia — appears more advanced in practical terms. FS already runs Frecciarossa 1000 trains in France that are certified for TVM-430 signalling, the system required for both High Speed 1 and the Tunnel itself. With those trains already in operation and another thirty on order, FS has a potential head start if it decides to extend services to London once access issues are resolved.

Yet the forthcoming ORR decision is unlikely to settle the wider debate over how to expand the UK’s high-speed rail links to Europe. 

Eurostar

Eurostar, currently the sole operator through the Tunnel, also intends to expand its own fleet. The company has cautioned that even if its new trains are approved, Temple Mills would still lack the capacity to accommodate additional operators.

The issue underscores a broader structural limitation. Great Britain’s entire cross-Channel high-speed network depends on a single depot, leaving no room for serious competition or growth. 

Industry observers and advocacy groups such as Bring Back Euro Trains have argued that real progress will only come when new maintenance sites are developed at locations such as Stratford or Ebbsfleet. Such facilities, they argue, would allow for multiple operators and unlock the wider potential of High Speed 1, the 109-kilometre line connecting London St. Pancras to the Tunnel.

For now, however, the future of cross-Channel competition remains tied to a single decision — whether the UK’s rail regulator will make room for one or more newcomers at Temple Mills. Until then, the ambitious plans unveiled by Gemini, Virgin and others remain suspended between concept and reality. 

The ORR’s ruling will determine not only who may operate through the Tunnel, but whether Britain is truly prepared to open its high-speed network to continental competition.

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