Mr Cameron's spokesperson said he had no plans to meet union officials because no request had been received. Community, the steelworkers' union, said it had sent two emails and one letter asking for a meeting with the prime minister.
Mr Javid has been heavily criticized after going on a business trip to Australia, despite being aware that Tata Steel was close to making a decision on its UK business.
Allies of the business secretary insisted he remained "in the hot seat" and "in control" of the government's response. On Tuesday he will meet Sanjeev Gupta, founder of the commodities firm Liberty House, who has expressed interest in some of Tata Steel's UK sites. "Sajid is certainly interested in listening to Sanjeev Gupta," said a person close to the business secretary.
On Sunday Mr Javid said there was no question of nationalizing the £15bn pension fund for Tata Steel's UK workers, which has a £475m deficit.
"Define nationalization," Mr Jones, Wales' first minister, responded. If Tata Steel's operations were to go into administration, the Pension Protection Fund, which is part-financed by levies on eligible pension schemes, would guarantee an 85 per cent payout to beneficiaries.
Mr Jones said that EU rules prevented the Welsh government from offering Tata tailored discounts on business rates. He underlined the desire for a comprehensive solution for Tata Steel's UK operations, saying that the different sites were "quite interdependent".