Police and teaching unions have criticised the government’s decision to roll out vaccinations based on age, rather than prioritising frontline workers, the i weekend reports. Scientific advisers to the government have said that focusing on key jobs would slow down the roll out and prolong the pandemic, it adds. The over-40s should be offered jabs in April, those in their 30s from early May, and the final group – those 18 and above – will be vaccinated from mid-May, the paper says.