A filing at companies house shows hundreds of subcontractors and suppliers owed cash by ISG fit-out – with one electrical contractor alone owed more than £20m.

The latest debts are on top of the £180m already identified at the defunct group’s other divisions.

And the total is set to grow as subcontractors fear the debt levels are grossly underestimated.

One supplier told the Enquirer: “My name has appeared on the list but we are owed four times what they are saying.

“It’s hardly a surprise though that ISG has got its number wrong again.”