In Tokyo on Monday, the Nikkei 225 was down 3.9% in late dealings, while the S&P/ASX 200 shed 1.7%. In China, the Shanghai Composite fell 0.8%, while the Hang Seng Index in Hong Kong shed 1.7%.

From Wednesday, nationals of some 30 European countries – including all those in the EU except Ireland – will need to carry the electronic permit to enter Britain, which left the EU in 2020. The ...