For much needed haircuts as new zealand reopens thousands of businesses at the end of lockdown. When tiers are in your eyes. And the hospital choir whose bridge over troubled water got a shout out from paul simon. Scientists say a new blood test, which detects whether someone has had coronavirus, is a major step forward. The test looks for antibodies which could indicate some immunity to covid 19 in the future. It was approved last night by Public Health england, and ministers say they want to roll it out as soon as possible first to health and care workers. But experts have cautioned that its not yet clear whether someone who has recovered from the illness develops long term immunity. Heres our Health Correspondent dominic hughes. A reliable, accurate Antibody Test that can tell if a person has had covid 19 is one of the keys to escaping the coronavirus crisis. Now a test developed by scientists at the swiss pharmaceutical giant roche offers serious potential. Having been officially a