MPs have demanded assurances the West Midlands will receive real benefits from the London Olympics, after the Government confirmed the cost to the public will be £9.3 billion.
A detailed study shows the cost of the 2012 Games will be almost four times the £2.4 billion originally budgeted for, ministers said.
The admission sparked a cross-party response from West Midlands MPs who demanded Olympics Minister Tessa Jowell come to Birmingham and explain exactly how much of the huge budget would be spent in the region.
Labour MP Siôn Simon (Birmingham Erdington) said: "On a fair share basis, it should be at least £1 billion or maybe £2 billion."
He was backed by business leaders in the city, who said it was difficult to see how the Games would benefit the region. The Treasury will contribute about £6 billion from taxpayers, while the National Lottery is providing about £2.2 billion.
The cash includes more than than £315 million on improving rail services in the capital. By contrast, Birmingham is still waiting for confirmation of £272 million to rebuild New Street Station.
Ms Jowell told the Commons yesterday the massive increase in the cost of the Games, which she had warned of back in March, had now been confirmed. The Government has always argued that the Games will benefit the whole country, partly through raising fitness levels by encouraging youngsters across the UK to take part in sport.
But Mr Simon said he wanted assurances that the money would be distributed across the country. He said: "Now that Tessa has stated what the final cost will be, I would call on her to come to Birmingham at the earliest opportunity and meet Birmingham's MPs, council leaders and other stakeholders from the city and the region, to explain exactly how much of this £9.3 billion will be spent in the West Midlands.
"I would like her to come to Birmingham and be precise about what our share will be. If we are going to see almost all the money spent in the South-east, I am going to need a lot of convincing that this is acceptable."
Conservative MP Andrew Mitchell (Sutton Coldfield) said: "This Government has consistently favoured London and neglected Birmingham, and I would like Tessa Jowell to assure us that it won't happen with the Olympics."
And Liberal Democrat MP Lorely Burt (Solihull) said: "The cost of these Games has gone beyond all bounds of reasonableness, and good causes have been robbed mercilessly."
Business leaders backed the call. Richard Brennan, chief executive of Birmingham Forward, which represents the city's professional and financial centre, said it was imperative Ms Jowell visited the regions.
"It is going to happen so we need to make the most of it rather than complaining," he said. "But that means sorting out New Street and the extended runway at Birmingham Airport before the games begin, so that we are able to present the West Midlands as an attractive destination."
Ms Jowell's statement to Parliament yesterday included some details of how the money will be spent, including £1.9 billion on preparing the Olympic site in east London and £1.2 billion on building the Games' venues.
A spokeswoman for the Department for Culture, Media and Sport said there were no figures for how much would be spent in the West Midlands.
She said: "What we have is a general breakdown of how the money will be spent. There is no specific breakdown of spending across the country."
Contracts of £30 billion could be on offer to businesses as a result of the Olympics, it has been estimated. But a survey by accountants BDO Stoy Hayward found that many West Midlands firms feared opportunities would be restricted to just businesses in the South-east.