Workers from a manufacturing firm on the verge of administration have marched through Edinburgh to rally support for their cause.

Burntisland Fabricators, known as BiFab, announced it was in a "critical cash position" on Monday.

Nearly 1400 jobs in Fife and the Western Isles have been put at risk, though union members decided to stage a "work-in" at their plants.

The move means staff will attempt to continue production despite no guarantee they will be paid.

On Thursday, hundreds of staff wearing orange boiler suits marched down the Royal Mile to the Scottish Parliament to raise awareness of their situation.

The march was organised by the Unite and GMB unions, which represent workers at the firm and have called for the Scottish Government to help save the firm.

BiFab manufactures structures for the offshore energy industry.

Workers were told on Monday that the company did not have enough money left to pay wages.

A spokesman for Unite said: "The BiFab workers have courageously decided to continue to work to complete their current contract, despite having no guarantee that they will be paid.

"Trade unionists are staffing the gates so that equipment and materials cannot be removed from the Methil yard.

"This is a viable workforce and these are viable yards, important strategic assets, ready and able to help deliver the future of Scottish manufacturing."

He added: "Letting these workers and their communities go under is not an option. We must stand shoulder to shoulder with the BiFab workers."

The company filed a notice on Monday saying it intended to appoint administrators.

BiFab has not formally entered administration, however, and directors said they are hopeful a solution can be reached.