Food and tap water are safe, but use common sense when buying food from a street stall. No vaccinations are required. Voltage Requirements 240 volts. U.S. appliances need an adapter and converter. Plugs are distinctive, with three thick, flat prongs.
Many hotels have two-pin sockets for North American razors.
Most shops are open Monday-Saturday until 7 pm, although shops in busy shopping or tourist areas are likely to be open on Sunday as well. Very few stores close for lunch 1-2 pm, but it's often difficult to contact anyone in an office at that time. In London, business meetings tend to be fairly relaxed, though some bastions of tradition are still stiffly formal. Shake hands upon meeting, but hold off on exchanging business cards until later. An informal drink is also quite common after the close of the business day.