Eight workers at a residential home near Braintree in Essex have been suspended after secret cameras filmed alleged poor care of residents.
One member of staff seen apparently slapping a resident was dismissed.
Anglia Retirement Homes said it had launched an independent inquiry into allegations of mistreatment at the Old Deanery in Bocking, after it was filmed by an undercover BBC reporter.
'Elderly Care Exposed' will be broadcast tonight.
More top news
A drug and alcohol abuse charity has warned a new law making psycho-active substances illegal won't necessarily solve the problem.
This weekend's show is the first to take place there since new rules came into force after the Shoreham aircrash.
The family of two little girls who were left paralysed following a crash say they will never forgive the driver who caused the collision.