The firm is due to start in May on a programme of improvement works that will run for a year.
The project is a partnership between East Coast and Network Rail, which owns the station building and is being funded by the Department for Transport’s station commercial project facility fund.
A Newcastle-based team from Ryder Architecture has designed the improvements, which include a major glazed pedestrianised area to be created in the front portico.
The portico will be transformed into a new retail space double its current size. Its internal layout will be simplified and will include more shops, and a new information centre.
East Coast Stations and Property Director Tim Hedley-Jones said: “Newcastle Central station is a key part of the history and future of both the city and the wider North East region.
“The improvements will accentuate the important heritage of the Grade I listed building, one of only six such stations in the UK, and act as a stunning new gateway to the city for visitors.