coronavirus. The tiering system is expecting to feature medium, high or very high risk ratings which will inform the "appropriate interventions" needed in each area of England.Greater Manchester will reportedly be placed in the highest category - Tier 3 - along with Liverpool and Newcastle, where infection rates are also soaring.At the other end of the spectrum, Tier One would be for areas with fewer than 100 covid-19 cases per 100,000 people and only the 'minimum restrictions' would apply.The new set of restrictions will reportedly be implemented from Wednesday and last at least four weeks before being reviewed.Mr Johnson will first hold a COBR meeting at around 8am before a data briefing at 11am with the deputy chief medical officer.