Thousands of people marched through central London on Saturday 22 January in opposition to mandatory vaccination for health workers. Protesters chanted: "Just say no!" Staff from the UK's National Health Service (NHS) were joined by a number of so-called anti-vaxxers for the protest. NHS workers are required to be vaccinated by April. The need for a delay between jabs mean the process of firing what could be more than 70,000 as-yet unvaccinated staff could begin on 3 February.