Glasgow firm Castle Contracts has had its operator licence revoked after another business was found to be operating its vehicles, in addition to poor vehicle safety.
Scotland¹s Traffic Commissioner, Joan Aitken, made the order after finding the company was not in control of its vehicles.
The firm's licence will be revoked on 30 October as a result of the industry regulator¹s decision.
Following a public inquiry which concluded in August 2015, Aitken ruled that the company had been used to get a licence for other businesses with adverse financial history.
She added: "I do not think the operation of Castle Contracts has been straightforward or transparent.
"I find that Castle Contracts has ceded control of the operator¹s licence to Ryan Plant Solutions and this goes to repute. Given the arrangement with Ryan Plant Solutions, I cannot allow this licence to continue."
Operator licences are not transferable and the holder of the licence must be the operator of the vehicles.
Aitken also found that Castle Contracts could not meet the mandatory financial standing requirements to continue holding a licence and noted that the business had breached licence undertakings relating to vehicle safety.