Northampton faces lockdown after nearly 300 workers at a sandwich factory that supplies M&S test positive for coronavirus as symptom-tracking app names six new hotspots across UK.

Local health chief said residents have been asked to 'act now' to avert lockdown like that in nearby Leicester. The Greencore food facility has been testing its own staff and found 213 cases along with 79 in official tests. Northampton is not in lockdown but is one of 29 places on Public Health England's watchlist