On the 22 March 2020, the government introduced new shielding health guidance and a support offer to help protect the people most vulnerable to COVID-19. What made this task truly remarkable was not only the scale and pace of the programme, but the unprecedented collaboration across MHCLG, DHSC, NHSE, NHSD, GDS, DEFRA, DWP, CO, local government and local delivery partners. Over four months, 2.2 million people were contacted by the programme, 1.2 million signed up to the website, and 4.7 million food boxes were delivered to over 500,000 people, with every department pulling together to help protect people's health.