Christmas card on a blue background showing a cartoon of Santa wearing a blue face covering with the words "Santa won't be stopped this year. Santa is a key worker", designed by Kasia Niemczynska, 2020

Many greetings cards makers developed cards with designs reflecting responses to the COVID-19 pandemic. Key workers are designated by the United Kingdom government as “critical to the coronavirus (COVID-19) and EU transition response”, also known as Brexit. These include people working in health and social care, education and childcare, local and national government, transport, public and national security, utilities and communication and public services such as emergency response, charities, religious staff, and journalists.