Covid-19: Daily tests to avoid isolation expanded in England By George Bowden image copyrightGetty Images A scheme to allow key workers to avoid Covid self-isolation in England has been significantly expanded following criticism it did not go far enough. Police, fire, Border Force, transport and freight staff will now be able to join a daily workplace test scheme, whether they are vaccinated or not. As many as 10,000 supermarket depot and food factory workers will also be eligible. Several sectors have warned of staff shortages in recent days. Currently, most people identified as close contacts of someone with coronavirus have to self-isolate for 10 days.