People walk outside the ExCel exhibition centre in London, Britain, March 25, 2020. Health Secretary Matt Hancock said Tuesday in a press briefing that a temporary hospital will be set up in the ExCeL centre, an exhibition centre in east London, with a capacity to hold up to 4,000 patients. (Photos: Tim Ireland/Xinhua)

Photo taken on March 25, 2020 shows a general view of the ExCel exhibition centre in London, Britain.

A lorry is seen outside the ExCel exhibition centre in London, Britain, March 25, 2020.

A man walks by the ExCel exhibition centre in London, Britain, March 25, 2020.

A van drives outside the ExCel exhibition centre in London, Britain, March 25, 2020.

Photo taken on March 25, 2020