RE: Booooom!6 Jan 2021 17:22
Although this is on the gov website (yesterday) mentions antibody testing/repeat testing.
5 January 2021
Updated 'Testing for coronavirus: privacy information – quick read' and 'Testing for coronavirus: privacy information'. In both documents, under 'What personal data we collect', added: 'vaccination status'; under 'Purposes your data will be used for', added: 'sharing your vaccination status with Public Health England (if you live in England) to understand the effectiveness of COVID-19 vaccines, including their effectiveness against different strains of the COVID-19 virus, and, where appropriate, to ask you to do a repeat test and/or an antibody test'.