The BBC Resources sale is on track to be completed by the end of the financial year, with a preferred bidders' list to be released by March.

The BBC opted against releasing a shortlist last October because some bidders had requested anonymity.

But Fleetwood Mobile is known to be interested in the OB division.

Satellite Information Service (SIS) and Arqiva OB are also thought to be interested.

Pinewood Studios has declared its interest in BBC Resources as a whole.