David Cameron has pledged to find the cash for a city deal which would plough tens of millions into the Tayside economy.
The Prime Minister was quizzed on the funding by Chris Law at the House of Commons on Wednesday.
Proposals aimed at securing the money have still not been put forward by local councils despite being announced months ago.
Sources close to the bid, however, indicated fully formed plans would emerge in the near future.
At Prime Minister’s Questions, Dundee West MP Mr Law asked the Conservative leader to give a “personal commitment to work with the Scottish Government to deliver funding for a Tay city deal for Dundee and the surrounding area”.
Mr Cameron replied: “I am very happy to give that commitment. I think city deals are working. They are working in Scotland, and I was very proud to be there with the Aberdeen city deal.
“I make the point that, obviously, city deals between the Scottish Government, the UK Government and the city concerned can only work if we are all part of one happy United Kingdom.”
Both Glasgow and Aberdeen have benefited from money being secured from Westminster then supplemented by Holyrood to encourage investment in the cities.
Inverness is the most recent Scottish region to secure a City Deal with £300 million expected to create more than 3,000 jobs in Inverness and the Highlands, where they will benefit from superfast broadband, making them the most digitally-connected rural region in Europe, alongside a wider set of measures to support business growth across the area.
An Edinburgh bid, which will take in much of Fife, was also looked upon favourably in the most recent Budget.
Mr Law said the Tay Cities deal would see Angus, Dundee, Perthshire and North East Fife receive up to £400 million to take forward specific infrastructure projects which could boost the region.
He added: “Funding from any such deal would be used for infrastructure projects to benefit the local economy, including improving the transport network and creating jobs.
“A City Deal for Dundee would support business growth and opportunity in areas such as Tourism, Food and Drink, Financial and Business Services, Creative Industries and Life Sciences and help promote Scotland on the international stage to boost our trade, investment and networks.
“I welcome the commitment the Prime Minister has now made to supporting the Tay Cities Deal and promoting innovation and growth within Dundee”