Four major consultancy teams have been appointed to develop plans for Crossrail 2.
Transport for London gave the four consortiums specific roles to play on the proposed line between south-west and north-east London.
Arcadis Hyder, working in partnership with Weston Williamson, Vinci Construction, Interfleet, First Class Partnerships and Dr Sauer & Partners, will be responsible for engineering and technical aspects of the design.
CH2MHill and Atkins will take on strategic modelling, route development; planning, appraisal and evaluation.
Mott MacDonald, Temple Group, ERM and WSP will look after environment and sustainability.
Aecom, Weston Williamson and Turkington Martin are in charge of town planning, economic development, socio-economics and urban design.
Mayor of London Boris Johnson said: “There is now real momentum behind Crossrail 2 and a growing sense that we can get it off the drawing board.
“We’re seeing strong recognition from the business community that this project could have major benefits for London, helping to boost rail capacity and the creation of new jobs and homes in the capital and beyond.”
TfL managing director for planning – and soon to be managing director of Crossrail 2 – Michèle Dix added: “The appointment of these four major consultancies is another important step in taking Crossrail 2 forward.
“They will work with us to help make the case for Crossrail 2 and prepare more detailed proposals for public consultation later in the summer.”
Businesses are keen to see the line take shape.
Baroness Jo Valentine, chief executive of business group London First, said: “Crossrail 2 will be a game changer that will bring huge benefits to London, the South East and the UK.
“It will provide new homes and jobs across the region, and improve the quality of life for people travelling in and around London.
‘As Crossrail 1 has shown, we have world class capability when it comes to planning and delivering this sort of project. We need Crossrail 2, we have the skill to build it, now we need to get on with it.”
When Crossrail 1, as it is already being dubbed, opens in 2018, it will boost the capital’s rail capacity by 10%.
Crossrail 2 will add the same proportion again, and link Hertfordshire with Surrey using new track and parts of the existing rail network.