That optimism does not appear to have been shared by scientists advising the Government, who struck a more cautious note. For example, at the same press conference Sir Patrick Vallance pointed out that the technologies still had to be trialled, saying that it was “completely wrong to assume this is a slam dunk that can definitely happen”.291 Further, a SAGE ‘task and finish group’ on mass testing concluded in late August 2020 that the use of testing as a “point-of-entry requirement” for venues and events could reduce transmission risk but it would have a “minimal effect” on reducing ‘R’.292 Following trials in different settings, most notably a citywide trial in Liverpool,293 it was not until 9 April 2021 that rapid coronavirus testing was offered to everyone in England, including those without symptoms.294