Alex Salmond has hit back at David Cameron's claim there is "zero" Scottish steel in the new Forth Road Bridge - saying there is some in the girders.

The Prime Minister, who has come under fire for his government's treatment of the UK steel industry, made the comment came after SNP MP Marion Fellows accused him of viewing Scottish jobs as "expendable".

Mr Cameron told to MPs that when it came to Scottish steel the replacement crossing contained "absolutely nothing".

He said: "It is worth asking how much Scottish steel was in the Forth Road Bridge - zero, none, absolutely nothing, yes.

"What a contrast with the warships that we're building, that of course we wouldn't be building if we had an independent Scotland.

"So we back the steel industry with actions as well as words," he added.

Later Mr Salmond corrected the Prime Minister in the Commons.

The former SNP leader told MPs: "I know that the Prime Minister would be incredibly anxious... to acknowledge that actually 45 per cent of the total orders of £540 million were placed with Scottish companies.

"I know that the Prime Minister would want to correct the misleading impression there was no Scottish steel in the contract by acknowledging that steel from the Dalzell plate mill was in the girders at either end of the bridge.

"And I fully understand the Prime Minister would want to acknowledge that the reason there was no Scottish bidder for the main sub contract was the closure of the Ravenscraig Steel Mill by a previous Tory Government in the 1990s removing our capacity to supply such steel."

The former First MInister also asked Speaker John Bercow to consider a "new innovative Prime Ministerial correction procedure" to give Mr Cameron the opportunity to "rapidly correct any misleading impressions he inadvertently gives".