However an Immigration Officer will check your passport on arrival. If you hold a visa you will not be refused permission to enter the UK unless there has been some change in your circumstances or you gave false information or did not disclose important facts when you obtained the visa. Holders of a visa may also be refused entry on medical grounds, if they have a criminal records, if they are subject to a deportation order or if there are exceptional reasons why they should not be admitted. These web pages are only a brief guide. They do not cover all the rules for entry.
Further information is available in a series of forms.
These can be obtained at the Foreign and Commonwealth Office Web Site .