COVID-19 vaccine
David Davis suggests mandatory jabs under consideration by the government could be struck down by courts.
The PM said vaccinations require "international cooperation" amid growing tensions between the EU and UK over supplies.
An international tug of war has broken out over doses of the AstraZeneca vaccine.
Watchdog's intervention comes after major EU countries halted roll-out amid blood clotting fears.
The MHRA says the benefits outweigh any risks and has urged the public to get their vaccine when invited to do so.
People in their 40s may have to wait until May for their first dose, but Matt Hancock has offered reassurance over target dates.
Those under the age of 50 without pre-existing conditions could be waiting a bit longer.
It means the Pfizer and AstraZeneca jabs may not need to be modified to protect against the strain.
Almost half of the adult population has now had at least one jab.
Are the effects of lockdown levelling off as we approach the next stage of Boris Johnson's roadmap? Here's where things stand.