A young visitor looks at human skulls and weapons found in the River Thames dating 1300-1000BC at the Museum of London, which is reopening following the further easing of lockdown restrictions in England, in London, Wednesday May 19, 2021. (Victoria Jones/PA via AP)

British Prime Minister Boris Johnson leaves 10 Downing Street to attend the weekly Prime Minister's Questions at the Houses of Parliament, in London, Wednesday, May 19, 2021. (AP Photo/Matt Dunham)

Yeoman Serjeant Clive Towell holds the keys to open the gates for the reopening of The Tower of London, Wednesday, May 19, 2021. After its longest closure since World War Two, the Tower of London will be reopening the gates of the 1,000 year old fortress on Wednesday. Whilst there, visitors will also be able to meet the two new additions to the Tower, the new baby ravens born during lockdown. (AP Photo/Kirsty Wigglesworth)

The traditional Opening Ceremony takes place at The Tower of London, Wednesday, May 19, 2021. After its longest closure since World War Two, the Tower of London reopened the gates of the 1,000 year old fortress on Wednesday. Whilst there, visitors will also be able to meet the two new additions to the Tower, the new baby ravens born during lockdown. (AP Photo/Kirsty Wigglesworth)