The invitation to tender is due to be issued in September this year and an operator will be appointed at the end of 2014. The successful train operator will start running the first services from May 2015 between Liverpool Street and Shenfield, taking over the stopping services currently operated by Greater Anglia. The route through Canary Wharf, the City and the West End will open in late 2018, with the full route running in 2019.

Howard Smith, Crossrail director of operations, said: "We are a step closer to appointing an operator for Crossrail. As our population grows faster than forecast, the case for stable and sustained investment in London’s transport network has never been stronger. Crossrail will help cut journey times across the city and will achieve internationally recognised high standards of reliability, train frequency and customer service. Crossrail will make it easier for people travelling across the capital, helping create jobs and supporting growth and regeneration along the route."