The source said Croxson, which is still trading, "never fully recovered from a bad debt, which has had a knock-on effect" on the company.
The source also claimed the ailing digital and litho firm had lined up three possible buyers, with a decision expected by "the end of the week".
A Croxson employee told printweek.com that 30 of the company's 85 staff were told on Thursday (28 February) that "their jobs were to finish".
Tim Elliot, managing director of Croxson's paper supplier Elliot Baxter, told printweek.com that it "did not see it coming. We're still reeling from it to be honest."
He added that Elliot Baxter is owed "in the region of £30,000" and it is still waiting to see if it can recover any stock.
Two other paper suppliers confirmed they were also owed for stock. One of the suppliers, which asked not to be named, said: "We're still deciding what to do as we weren't expecting it at all."
Croxson managing director Peter Wright would not comment.
Have your say in the Printweek Poll
Related stories
Latest comments
"And here's me thinking they bought the Docklands Light Railway."
"15 x members? Why don't they throw their lot in with the Strategic Mailing Partnership (SMP) and get a louder voice?"
"Some forty plus years ago I was at a "sales" training seminar and got chatting to the trainer after the session had finished.
In that conversation he told me about another seminar he had..."
Up next...

Further breathing space
'Serious group' interested in Highcon, new deadline set

Automation welcomed
Colourbridge enhances efficiency with new Duplo multi-finisher

New business unit includes OpSec