Hundreds of steelworkers are heading to London to demonstrate and put pressure on the government to help secure the future of the steel industry.
Today is a crunch day for the workers as Tata's board is meeting to discuss the bids.
Business Secretary Sajid Javid and Welsh First Minister Carwyn Jones have travelled to India for the meeting.
ITV News' Rupert Evelyn reports:
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Hundreds of steelworkers will march on Wednesday to highlight the crisis in their industry.Read the full story ›
A deal between Excalibur Steel UK and Liberty House to buy the Tata Steel UK operation is "completely untrue", ITV News Business Editor Joel Hills has been told.
"The suggestion that Stuart Wilkie is going to join the Liberty Steel bid is completely untrue" - Roger Maggs. Chairman, Excalibur Steel.
The "all-British bid" between the two companies was thought to have been to allow Excalibur access to what one source describes as "the deep pockets" of Liberty House, while in turn they would benefit from working closely with the team who have been seen as the front-runners from the outset of the sales process.
The rumour had emerged ahead of the planned Tata board meeting in Mumbai this week to whittle down the seven bids for the ailing steel operation.
The sale includes the huge Port Talbot plant and 15,000 jobs across the UK.
Tata Steel UK faces a potential new option this week - the possibility of two bidders working together.Read the full story ›
Liberty House and Excalibur Steel UK could be considering working together to buy the Tata Steel UK operation, ITV News understands.Read the full story ›
The Board of Tata Steel Europe said seven expressions of interest in the UK steel business will go to the next stage of the sale process.Read the full story ›
Prime Minister David Cameron has confirmed "a number of serious inquiries of interest into buying all of Tata" were received by yesterday's deadline.
He told PMQs that the government would now work with Tata Steel and potential buyers to "get that list down to those that are really seriously intending to bid for the business".
- Report by ITV News Correspondent Rupert Evelyn
When the sale of Tata Steel UK was announced, it was feared that thousands of people would lose their jobs.
But spirits are high at the plant in Port Talbot with employees feeling optimistic about the future of the company after two groups have bid for the business.
Management buyout team Excalibur have said that they will turn around the plant, aiming to be profitable within two years.
The second bidder, Liberty House Group, have outlined their 'greensteel' business model for the plant.
Liberty House has confirmed it has formally submitted a letter of intent containing its bid for the entire issued share capital of Tata Steel UK, and released a statement outlining its "sustainable" plans for the company.
The bid is based on Liberty's greensteel business model and would involve a transition from steelmaking in blast furnaces to recycling steel in electric arc furnaces over time, while ensuring the company continues to meet key customers' quality requirements.
Steelmaking would be ultimately powered by renewable energy sources.
Liberty believes the UK steel industry can achieve long-term viability if based on an agile, sustainable, non-cyclical model which integrates liquid steel-making from recycling with down-stream production and the manufacture of advanced engineering products.
The Excalibur Steel consortium has confirmed that they are hoping to secure a management buyout of Tata Steel's UK assets.
Earlier, Liberty House confirmed it will put in a bid to buy the assets.
The deadline for potential buyers to come forward is tonight.
BREAK: Excalibur Steel confirm intent to buy Tata steel "We are confident we can turn the business around & sustain profitable steel-making"
Excalibur want to acquire "Tata Steel Europe owned steel assets in the UK via a Management Employee Buy-Out"
Excalibur Steel UK believe they can make profit in the UK, "including both the down-stream and up-stream operations.”