The Government will make a "substantial" financial contribution to rebuilding Birmingham's New Street Station, Transport Minister Alistair Darling pledged yesterday.
He said it was essential work went ahead, for the city and the national rail network, and he said he hoped to make an announcement about exactly home much "soon".
But Ministers were urged to go further by Birmingham MP Sion Simon - who said Birmingham City Council's "dithering" had doomed the project.
He urged Mr Darling to take personal charge of New Street and ensure the refurbishment.
There was also a hint of rivalry between West Midland cities, as Wolverhampton MP Rob Marris (Lab Wolverhampton South West) asked for assurances investment in New Street would not be at the expense of other stations.
The issue was raised in the House of Commons by MP Richard Burden (Lab North-field) who said: "New Street is the busiest interchange station in the UK, running at about twice its capacity. That is not only unacceptable to the West Midlands but for the national rail network."
Mr Darling said the city council and Network Rail were responsible for the £350m plans.
He added: "The station is carrying far more passengers than it was designed for. There will have to be a substantial public contribution, whether from the Department for Transport or the Department of Trade and Industry, or others.
"This is part of the network where we need to spend a considerable amount to improve."
Mr Marris said: "It is important we don't get an overblown plan for New Street which will adversely affect other stations in the region, including my own in Wolverhampton."
Mr Simon blamed delays on the Conservative and Liberal Democrat partnership running the city council, saying: "If I might call a spade a spade, given the hopeless dithering of the Tory-Liberal administration in Birmingham, could I ask the Secretary of State to intervene and sort out the disgrace of New Street Station. We should have a 21st century station for a 21st century city."
Mr Darling said: "I do take a personal interest in it, not least because every time I go to Birmingham I am asked about it, which is understandable."
The station was built in the 1960s and there has been concern about its state for 15 years.