Emergency numbers + embassies in United Kingdom

Emergency numbers in United Kingdom

General emergency 999 or 112

Police999

Ambulance999

Fire999

NHS treats emergencies for free at point of use, but you'll be billed if it's not life-threatening. Travel insurance still recommended.

For United States citizens

U.S. Embassy, 33 Nine Elms Lane, London

For Canada citizens

Canadian High Commission, Canada House, Trafalgar Square, London

For Australia citizens

Australian High Commission, Strand, London

Verify addresses on the official embassy site before traveling — embassies move occasionally.

Petition/clipboard scams in tourist areas (pickpocket distraction), fake taxi rides from Heathrow — use the official black-cab queue or Uber.

Save your embassy's contact in your phone before you travel — country code + number.
Register your trip with your government if you're a US citizen (STEP — step.state.gov), UK (FCDO advice), or Australian (Smartraveller). Free, takes 5 min.
Take photos of your passport and store them in cloud + email it to yourself. Replacements are much faster with a copy.
Travel insurance with medical evacuation — check the coverage limit. $100,000+ medical, $250,000+ evacuation are the realistic minimums for serious incidents abroad.
Know the difference between the police and tourist police. When dealing with regular police in a non-English-speaking country, ask for someone who speaks English (or your language) — many will have a translator on call.