PricewaterhouseCoopers has not provided an update on the actions taken at the printer so far, but is expected to do so later today.

The situation regarding clients is also fluid. A source close to the situation said that it looked like more clients could shift their titles to other printers this week. “Publishers are very jittery and some additional clients seem to be about to move their work,” he said.

PrintWeek understands that around a dozen workers were laid off on Friday at Polestar Chantry in Wakefield, including printers, assistants, and engineers.

Redundancies were also being made at Polestar Sheffield this morning.

“Not many presses are running around the group today,” said one worried insider.

However, initial expectations that “hundreds” of staff were to be made redundant across the Sheffield, Bicester and Chantry factories appear to have been scaled back. A source said that PwC amended the plans once the effect on Polestar’s ability to continue production became clear.

Unite national officer Ian Tonks said: “We have been expecting some redundancies because of the loss of titles but we don’t know the full ramifications yet. I’m expecting to hear something today.”

On Friday and Saturday representatives from potential buyers Walstead Investments and YM Group were seen at Polestar factories.

Walstead has confirmed its potential interest in certain Polestar assets, as has Prinovis. YM Group has not commented.

Polestar UK Print (Sheffield, Bicester and Chantry) and Polestar Stones-Wheatons went into administration eight days ago.

Polestar Applied Solutions and customer publishing specialist River Group, which share the same parent company, are not included in the administration.