The regime that applies
Depending on nationality, entry is either visa-free for short visits — with an electronic travel authorisation required in advance — or under a standard visitor visa applied for before travel. Check which applies to your passport on the official portal, and note that the authorisation scheme has been extended progressively to more nationalities.
A visitor may not marry
This catches couples out every year. If the purpose of the trip is to marry or form a civil partnership in the UK, the correct route is a marriage visitor visa — a different application, with evidence of the planned ceremony. Entering as an ordinary visitor and then giving notice is treated as a breach, and it can affect every later application.
What the visitor application turns on
Not your invitation, but the applicant's ties to their own country: employment, property, family responsibilities, a history of returning from previous trips. Add evidence of funds, accommodation details, and a clear, honest account of the relationship. Refusals are common and poorly reasoned; there is no full right of appeal for visitor visas, which makes the first application the one that matters.
Health and practicalities
No vaccinations required. Visitors are not covered by the NHS for most treatment and are charged: travel insurance is necessary. Those coming on a long-stay visa pay an immigration health surcharge as part of the application — a substantial sum that is often forgotten in budgeting.
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.