A new team has been appointed to progress plans for a £286 million revamp of Birmingham International station in Solihull.
Economic development body Urban Growth Company has recruited WilkinsonEyre as architects and WSP as lead engineers.
Joining them are property consultancy Jones Lang LaSalle and law firm DWF while Faithful+Gould is providing project management, quantity surveying and principal designer services for the early stages of the project.
WilkinsonEyre and WSP will work with the UGC to review the original designs first revealed last year and take them to the next detailed stage.
New plans are expected in February 2020 with construction due to start in 2022 for completion by 2026.
The appointment of the professional services team comes after the UGC secured £9.27 million from the West Midlands Combined Authority last year to progress the design process.
The UGC's plan is to create an integrated transport exchange, bringing together existing rail, future high-speed rail, trams, buses and other modes of transport, connecting the station to the airport and HS2 by 2025.
Solihull Council leader Cllr Ian Courts said: "The station is set to become one of the busiest in the UK and this proposed redevelopment will see it being transformed into an iconic gateway to the region, with greater capacity and a much-improved passenger experience which will be important for people travelling to or through Solihull."
UGC's managing director Jonathan Bretherton added: "People are excited about the prospect of HS2's arrival but delivery of this project first is crucial to provide connectivity.
"Passengers are right to expect seamless connections, whether they're travelling locally, regionally, nationally or internationally, and that's what the new Birmingham International station will provide, along with a great destination to do business."
UGC was set up by Solihull Council to maximise the economic potential of the site known as 'The Hub' near Birmingham Airport and the National Exhibition Centre campus.
The land comprises Birmingham Airport, the NEC, Jaguar Land Rover, Birmingham Business Park and Arden Cross and will be home to the HS2 Interchange station.
It is expected to contribute £4.1 billion to the economy by developing 4,000 houses and 8.3 million sq ft of commercial space on land around 1.2 miles from the airport.
It is one of four economic development areas - along with Solihull town centre, North Solihull and Blythe Valley - which are jointly branded as UK Central.