After a Care Quality Commission (CQC) inspection, a care facility implemented special measures to safeguard its residents.
Orchard House in Harwell, Oxfordshire, had its overall evaluation drop from outstanding to inadequate.
After receiving complaints about its management and safety, the CQC conducted the inspection in April.
The Active Care Group expressed "very disappointment," but added that it had considered the data and taken appropriate action.
Orchard House is a facility for neurological rehabilitation that aids people recovering from strokes, brain and spinal cord injuries, minimally conscious states, and other conditions.
At the time of the surprise inspection, there were ten residents there.
The CQC issued two warning notices, requiring it to enhance its management and risk assessment and guarantee that its residents received secure care.
The deputy director of operations for the CQC's southern region, Amy Jupp, stated that "some safe practices had lapsed and people weren't protected from the risk of abuse, avoidable harm, or allowed to have maximum choice and control of their lives.".
Because of inadequate staff training and incomplete and inaccurate care plans, she claimed that some people were unable to access painkillers at specific times.
She demanded immediate improvements and criticized the "steep decline" in standards.
If not enough improvements have been made, the facility might be shut down by the CQC.
Active Care Group, a company that offers care services across the UK, stated in a statement: "We took immediate action to ensure staff had the direction and information to support the residents at the facility.
"We have taken the report's conclusions into consideration and have already identified several important areas where our service could be improved. ".
It claimed to have strengthened its quality control and audit procedures, reviewed all of its documentation, and improved its risk assessment methods.
It added that it was "committed" to completing the improvements "in a timely manner".