Although Eurostar owns the depot, under UK and EU-derived rail legislation, key railway infrastructure must be made available on a fair and non-discriminatory basis. This includes maintenance depots if they are considered essential facilities. As Temple Mills is currently the only British railway depot accessible to (high-speed) trains with the larger continental European loading gauge, it's classed as essential for international rail services, so the rail regulator can issue an order to Eurostar to provide shared access.