Pro-democracy protesters have clashed with riot police outside the headquarters of Hong Kong's government.
Government offices and shops were forced to temporarily close while the stand-off continued.
David Cameron believes the Chinese authorities' decision to ban a British parliamentary committee from entering Hong Kong is "mistaken" and "counter-productive".
The Prime Minister's spokesman told reporters at a regular briefing:
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.