However, the JCVI only make assessments from a clinical perspective.
The chief medical officers alongside Mr Javid consider the wider impact of Covid infections, such as school closures.
This measure is hoped to prevent further disruption from pupils taking time off because of catching covid, or needing to self-isolate.
In his press conference, Prof Whitty also warned: “as we go into autumn and winter, where there will continue to be challenges and pressure on the NHS.”