Find
essential emergency contacts, medical support details, and British
Embassy assistance for The USA. This guide helps UK travellers stay
safe, respond quickly, and handle urgent situations with reliable,
up-to-date information.
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A concise overview of the key laws, legal expectations and enforcement practices travellers should understand before visiting The USA — including behaviours that may be acceptable in the UK but carry stricter penalties or different interpretations abroad.
• Drug laws are strict — possession, use or trafficking of illegal drugs can lead to arrest, fines and imprisonment.
• Cannabis laws vary by state; it may be legal in some places but remains illegal at federal level and in many states.
• Firearm laws differ widely, but visitors must never attempt to buy, carry or handle weapons.
• The legal drinking age is 21 across the USA — underage drinking can result in arrest or fines.
• Drink-driving laws are heavily enforced; penalties can include fines, licence bans and prison.
• Laws and social norms vary by state and region — always follow local rules and signage.
• Public nudity or indecent exposure is illegal except in very limited designated areas.
• Vandalism, graffiti or damage to public or private property is a criminal offence.
• Damaging national parks, protected lands or wildlife habitats can result in large fines.
• Littering is prohibited and often enforced with on-the-spot penalties.
• Police may request identification; travellers should carry a passport or clear copy.
• Failing to follow lawful orders from police can quickly escalate situations.
• Disorderly conduct, public intoxication or aggressive behaviour can lead to arrest.
• Scams can occur around ATMs, tourist hotspots and online rentals — stay cautious.
• Never attempt to bribe police or officials — this is a serious offence.
• Traffic laws, speed limits and right-of-way rules differ by state — learn the basics before driving.
• Driving without a valid licence, insurance or in breach of rental terms is illegal.
• Seatbelt laws and child-seat rules are strictly enforced.
• Public transport systems require valid tickets; fare evasion can result in fines.
• Overstaying your visa, ESTA or permitted entry period can lead to detention or bans on future travel.
• Drone use is regulated by federal and state rules; flying near airports, crowds or restricted sites is prohibited.
• Photographing some federal buildings, security facilities or military bases may be restricted.
• At concerts, museums or attractions, photography rules vary — always follow local instructions.
• Respect people’s privacy when taking photos in residential areas.
• National parks and wilderness areas have strict rules around camping, fires and wildlife protection.
• Starting fires outside designated areas or during fire bans is illegal and dangerous.
• Swimming or hiking in closed or hazardous areas is prohibited and can result in fines or rescue charges.
• Feeding wildlife, including bears, deer, raccoons or marine animals, is usually illegal.
• Removing plants, rocks or natural items from protected areas may be prohibited.
• Damaging historic monuments, cultural sites or Native American heritage areas is a serious offence.
• Entering closed archaeological or heritage zones is forbidden.
• Purchasing items made from protected species may be illegal and they can be confiscated.
• Respect cultural sensitivities at memorials, cemeteries and indigenous lands.
These are important behaviours and actions to avoid to stay respectful, safe and aligned with local expectations. Remember that what feels familiar or harmless in the UK may be perceived through a different cultural lens in the United States.
• Don’t attempt to buy alcohol or enter bars without valid ID, regardless of age — strict ID checks apply nationwide.
• Don’t assume public drinking is allowed, as many cities enforce open-container laws with fines for alcohol in streets or parks.
• Don’t ignore road rules on turning right on red, which is legal in many states unless a sign says otherwise.
• Don’t wander into unfamiliar neighbourhoods at night, and seek local advice before walking long distances.
• Don’t carry illegal drugs, including small amounts of cannabis where it’s still prohibited at state or federal level.
• Don’t take photos of security checkpoints, border officers or airports, where restrictions may apply.
• Don’t swim in lakes, rivers or oceans without checking local conditions, especially where strong currents, rip tides or dangerous wildlife exist.
• Don’t underestimate long driving distances, and plan fuel, rest stops and food carefully on rural highways.
• Don’t leave valuables visible in cars, particularly in major cities where break-ins can occur.
• Don’t attempt risky wildlife encounters in national parks, such as approaching bison, bears or elk for photos.
• Don’t walk across highways or busy roads, as jaywalking laws vary and fines can apply.
• Don’t assume tips are optional, as tipping 15–20% is standard and expected for most services.
• Don’t smoke where prohibited, especially indoors, near building entrances and in certain public spaces.
• Don’t ignore state-specific firearm laws, and avoid discussing or handling firearms unless in controlled settings.
• Don’t argue aggressively with law enforcement, and follow all instructions during traffic stops or checks.
• Don’t cross private property without permission, as trespassing laws are enforced strictly.
• Don’t underestimate heat risks in desert regions, where dehydration and heatstroke can happen quickly.
• Don’t enter unfamiliar waters in Florida or Gulf Coast areas, where alligators may be present near the shore.
• Don’t assume pedestrian crossings always give you priority, as vehicle behaviour varies widely.
• Don’t rely on public transport everywhere, particularly in cities with limited coverage outside downtown areas.
The British Embassy provides assistance to UK nationals, including help with passports, emergencies and consular enquiries.
British Embassy Washington DC (Main Office)
Address: 3100 Massachusetts Avenue NW, Washington DC 20008, USA GOV.UK
Telephone (switchboard / consular assistance): see latest contact details at: https://www.gov.uk/world/organisations/british-embassy-washington
Official USA country page: https://www.gov.uk/world/usa
Other British Consulates General in the USA include:
Full list (with latest details): https://www.gov.uk/world/usa
The image shown is for illustration only. Always rely on the address and contact details provided above when seeking embassy assistance.
Use the following numbers for police, fire and medical emergencies.
• General Emergency (Police, Fire, Ambulance): 911
Tourist police and assistance lines can help visitors with safety concerns and local guidance.
• There is no nationwide “tourist police”, but major cities and states have tourism offices and visitor information centres that can provide local safety advice and contacts.
• Your hotel, host or tour operator can usually provide the most relevant local non-emergency numbers.
Foreign, Commonwealth & Development Office (FCDO) – 24/7 Global Helpline
Keep this number stored in your phone and written down separately in case your mobile is lost or stolen.
The UK Foreign, Commonwealth & Development Office (FCDO) provides essential consular support to British nationals abroad. This includes help with lost or stolen passports, information on local laws and legal processes, and guidance during medical issues, crime, or major emergencies. When local circumstances make it difficult to reach a British Embassy or Consulate, travellers can also contact the FCDO’s 24/7 global helpline for immediate advice and support.
Contact your travel-insurance provider’s 24-hour emergency assistance line immediately in the event of illness, accident, serious injury or theft.
Honorary Consuls offer limited support in regions where the British Embassy is not present.
Where UK Honorary Consuls operate in the USA, details can be found via:
This information explains how to access urgent medical help and emergency treatment.
The USA is not part of the GHIC/EHIC scheme — these cards do not provide any entitlement to free or reduced-cost healthcare. Comprehensive travel insurance is essential for all visitors.
NHS / GHIC Information: https://www.nhs.uk/ghic
If you need medical help in the USA:
• In a life-threatening emergency, call 911.
• For non-urgent issues, use urgent-care centres, walk-in clinics or primary-care practices (check your insurer’s recommendations).
• Carry your passport, insurance information and a credit or debit card for payment.
Below is an overview of public and private healthcare services, including what travellers can expect when accessing medical care.
The USA has some of the best-equipped hospitals and clinics in the world, but treatment is extremely expensive and often requires upfront payment. There is no reciprocal arrangement for UK travellers, so GHIC/EHIC is not valid. Comprehensive travel insurance — covering medical treatment, emergency surgery, repatriation and pre-existing conditions where relevant — is absolutely essential. Urgent-care centres can be more affordable than emergency rooms for non-life-threatening issues.
Follow these steps if your passport is lost or stolen, including how to apply for an Emergency Travel Document.
If Your Passport Is Lost Or Stolen
You may need passport photos, proof of travel plans and to pay a fee for the ETD.