The HS2 task force say the East Midlands could miss out on a high speed rail link from north to south, unless politicians can come to a broad agreement on where it should be based.
At a conference today in Loughborough, delegates heard compelling arguments from all sides.
Toton in Nottinghamshire had been a preferred option, but now Breaston in Derbyshire is looking a possibility.
No decision is expected until after the General Election. Todays summit was all about winning hearts and minds.
Campaigners have lost their latest legal challenge over the Government's HS2 high-speed rail project.
The HS2 Action Alliance and Hillingdon Council in west London argued that argued the Transport Secretary had not undertaken sufficient environmental assessments on phase 1 of the route.
But Mr Justice Lindblom, sitting at the High Court in London, dismissed all grounds for the claim.
Phase 1 of the line will run from London to Birmingham while phase 2 will run through the East Midlands to the north.
Campaigners fighting government plans for high speed rail have lost the latest legal challenge.
HS2 Action Alliance and Hillingdon council in London brought about the challenge over the legality of the directions issued by the Transport Secretary for the first phase of the scheme between London and Birmingham.
They argued the directions were fatally flawed and should be quashed.
But today, Mr Justice Lindblom, sitting at London's High Court, dismissed all counts of the claim.
Transport Minister Robert Goodwill said court cases against the project were 'costly and fruitless'.
The High Court has once again dismissed a Judicial Review in respect of HS2.
I invite interested groups to work with us through the Parliamentary process on making HS2 the very best it can be, and not to waste money on costly and fruitless court cases.
The project had a huge vote of support in Parliament, recognising the importance of HS2 for the long term economy of the country.
It will provide jobs, skills and free up space on our congested network for more trains and more passengers.
Birmingham will be announced as the chosen site for the new HS2 Construction HQ, creating 1,500 new jobs.
It will be the home to the engineers and designers who will put together the detailed construction plans for the track, stations and signalling.
The leader of a campaign group opposed to the building of HS2 - the High speed rail line which cut journey times from Birmingham to London in half - has been putting his case to MPs.
Joe Rukin is challenging a bid by HS2 Ltd - appointed to build the £50billion pound line - who claim that Stop HS2 has no legal right to petition the select committee now considering the actual route. He's hoping the challenge will be overturned.
The Transport Secretary has said it's vital to get the "best people" working on HS2, after it emerged that thirty staff could be better paid than the Prime Minister.
The Transport Secretary & Derbyshire Dales MP Patrick McLoughlin said the proposed salaries were within the budget set and would involve hiring engineers with established skills.
But he said all salaries would have to be approved by the Treasury.
A group of MPs are due to meet up to three times a week to discuss opposition to HS2, the High Speed rail line.
Almost 2,000 petitions have been sent in - and all of them have to be heard and discussed before building work can begin. The first meeting takes place today.
The MPs will meet two or three times a week to hear the petitions - and it's expected to take around two years.
A group of MPs from the West Midlands are calling on ministers to drop plans to use a piece of land in the middle of Birmingham as a construction yard for HS2.
Among them is Liam Byrne who wants the site at the junction of Ladywood, Erdington and Hodge Hill to be developed instead, which he believes could create up to 7,000 jobs.
Under current plans, once the high speed rail line has been constructed, the site would become a yard for trains.
A National College to train people to build HS2 could be built in Birmingham or Derby after the sites were shortlisted by the Government.
Doncaster and Manchester have also been shortlisted as locations for the college.
Church leaders have condemned the planned route for HS2, warning that it will run through graveyards and disturb human remains.
The Archbishops' Council, which includes the Archbishop of Canterbury Justin Welby, says the route will destroy three burial grounds including one in Birmingham.
In a letter to the House of Commons they say not enough is being done to ensure exhumed remains are treated in a reverent manner. They say the Bill allowing HS2 to go ahead should not be passed into law.
Janet Gough, from the Archbishop's Council, has told ITV News that a specific clause is needed in the legislation behind HS2 to ensure Bishops can oversee exhumation and reburial.
The Department for Transport says burial grounds have been avoided as much as possible and all remains will be treated with dignity, respect and care.