Tata Steel: Gupta now wants to see Tata detail

A potential buyer of Tata's UK steel operation admitted his takeover plans had been written "on the back of an envelope".

Sanjeev Gupta, head of Liberty, said taking over the loss-making business would be a "daunting proposition".

He reiterated that he would not be looking to make mass redundancies but said he could give no guarantees.

Tata is to start the formal process to sell its UK plants by Monday, according to Business Secretary Sajid Javid.

Mr Gupta told the BBC Wales correspondent Hywel Griffith he would need to examine the details of the business.