Boris Johnson was booed as he left Dorland House following a day of giving evidence to the Covid inquiry.
Crowds of bereaved family members shouted at the former prime minister as he left the building in west London on Wednesday evening.
It comes after the former prime minister admitted he should have "twigged much sooner" when the pandemic took hold in Italy in February 2020.
Mr Johnson led the country throughout the pandemic, and Module 2 of the inquiry is scrutinising his decisions at the time.
Questioning was set to focus on lockdown timings and the reported “toxic” environment in Downing Street, as well as the boozy illegal gatherings which ultimately led to Mr Johnson’s downfall.
The ex-PM arrived three hours early for the first of two days of expected testimony.
It meant he avoided protesters who began gathering outside the inquiry building in Paddington shortly before 8am.
