UK Travel Guide: Essential Safety Tips, Entry Requirements, and Advisories for US Travelers in 2025

Travelers interested in visiting the United Kingdom should be aware of recent updates and advisories to ensure safe and well-prepared journeys. The U.S. State Department has issued a Level 2 travel advisory for the United Kingdom, urging visitors to exercise increased caution due to the threat of terrorism. Terrorist groups are known to continue plotting attacks, which could occur with little or no warning. Potential targets include tourist destinations, transportation hubs, markets, government facilities, hotels, restaurants, places of worship, sporting events, and more. Additionally, there is a localized risk of violence in Northern Ireland, primarily directed at police and military targets.

As of January 8, 2025, travelers from 49 non-European Union countries, including the United States, are required to obtain an Electronic Travel Authorization (ETA) prior to entering or transiting through the UK. The ETA, electronically linked to one’s passport, remains valid for two years and allows stays of up to six months for tourism, business, or academic purposes. Visitors without an approved ETA will be denied boarding. It is recommended to apply well in advance, as processing typically takes up to three business days. This new requirement is critical for ensuring smooth entry into the country.

The Centers for Disease Control and Prevention advises travelers to the UK to stay updated on vaccinations, particularly for Hepatitis B. When navigating the UK, pedestrian and vehicle safety is also essential. Pedestrians should use sidewalks and crosswalks, while drivers should be aware of local traffic laws, as the UK drives on the left side of the road. Consider using official taxis and wearing seatbelts at all times. Travelers should avoid using cell phones while driving and plan to travel during daylight hours.

Finally, the US Embassy highlights that travelers should comply with all local laws. Violations, particularly related to drug offenses, can result in severe penalties, including imprisonment or fines. Healthcare is widely available throughout the country, though accessing assistance in smaller towns may take longer. Emergency services can be reached by dialing 999 in the UK or 112 in Gibraltar.