The regime that applies
Most nationalities enter visa-free, and for unusually long periods — ninety days for many European passports, a hundred and eighty for British citizens. Hong Kong maintains its own immigration system, separate from mainland China's: a Chinese visa does not admit you here, and entering Hong Kong does not admit you to the mainland.
Passport validity of at least one month beyond the stay is required for most, though airlines often apply the six-month rule regardless.
Crossing to the mainland
A trip to Shenzhen or Guangzhou means a separate Chinese visa, obtained in advance, and a formal border crossing. Several visa-free transit schemes exist for the mainland and their terms change frequently — verify the current position rather than relying on an older account.
Health and practicalities
No vaccinations required; healthcare is excellent and, for visitors, expensive — insurance is necessary. The Octopus card covers transport, convenience stores and much else and is worth buying on arrival. Typhoon season runs from summer into early autumn, and a signal 8 warning closes the city entirely for the day.
Three rules that hold for every destination
- Use the official portal. Sites that "facilitate", "expedite" or "check" a visa charge for a service the state does not require, and collect your identity documents on the way. The official site is always cheaper and usually faster.
- A visa is not a right of entry. It is permission to present yourself at the border; the officer there decides. Carry the return ticket, the address of your stay and evidence of funds.
- Read your own foreign ministry's travel advice before booking, not after. It conditions your insurance and your consulate's ability to help.
The passport comes first
The commonest reason for being refused boarding is not the visa but the passport: insufficient validity beyond the return date, no free pages, a damaged document. Check it the day you decide to travel, not the week you leave — a renewal takes weeks.