Surely a counting error, and not that people refuse to die on sundays.
Anyway, declines in the number of deaths everywhere again. Even in a sundays only comparison. Good news.
Also. UK vaccine testing is far enough advanced that they are talking about having 30m doses available by September.
http://www.bloomberg.com/news/articles/2020-05-17/astrazeneca-aims-for-30-million-u-k-vaccine-doses-by-september