It's emerged that around 100 staff were invited to a social event in the Downing Street garden during the UK's first lockdown.
A leaked email shows people being encouraged to "bring their own booze" to "make the most of the lovely weather" in May 2020.
Boris Johnson and his wife Carrie are reported to have been among around 40 who attended the event.
The opposition Labour Party says the prime minister has "serious questions" to answer.
Rivka Gottlieb from the Covid-19 Bereaved Families for Justice group says the affair is "soul destroying".
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