The High Court is expected to give its ruling on a number of legal challenges to the government's plans for HS2 later today.
Opponents of the high speed rail plans are asking a judge in London to declare the multi-billion pound project legally flawed and to reconsider the plans.
The first phase of HS2 would see a high-speed railway line running from London to Birmingham.
If successful, the legal challenge could potentially delay the scheme for years.
An influential group of MPs says the DfT has failed to present 'a convincing strategic case' for HS2.
Campaigners say they hope to put plans for HS2 through the Midlands back to square one as they prepare to go to the High Court tomorrow.
Campaigners from HS2 Action Alliance are heading to London tomorrow to take on the Government at the Court of Appeal.