If any of your workers test positive:
Employers should call the Self-Isolation Service Hub on 020 3743 6715 as soon as they are made aware that any of their workers have tested positive.
Employers will need to provide the 8-digit NHS Test and Trace Account ID (sometimes referred to as a CTAS number) of the person who tested positive, alongside the names of co-workers identified as close contacts. This will ensure that all workplace contacts are registered with NHS Test and Trace and can receive the necessary public health advice, including the support available to help people to self-isolate.
In the event of an outbreak in the workplace, employers should contact their local health protection team.