Didn't Britain have any stamps when it left London?

When you left England, you really didn't have an exit stamp stamped by the Immigration Department. You can go through security with your ticket. It's the same at any British airport, starting from 200 1 at least. But you must first verify it with your passport and the completed entry cartoon. Immigration officials will ask about round-trip air tickets, the purpose of coming to Britain, the place of arrival or residence, the length of stay in Britain, etc. (Later, in 2006, fingerprint biometrics was added, and entering the UK generally requires both hands and thumbs. If it is the first time to enter the country with a visa, the entry stamp will be affixed to the lower right corner of the visa, and then you are allowed to enter the country to pick up your luggage. Generally, there is no security check and special inspection of articles when leaving the airport, and sometimes the customs will conduct spot checks or spot checks on articles with luggage. It is said that the Immigration Department of the British Home Office is studying the control of leaving the country with non-British passports. It is said that the exit stamp may be affixed in the future, but it is not known when it will start. In China, entry and exit must be stamped, but in recent years, we have simplified and omitted filling out exit or entry cards, which is less than a "blue card" procedure in Britain. As for how the British Immigration Bureau knows the individual's stay in the UK (such as whether it exceeds 180 days, etc.). ) When he leaves the country, it is speculated or estimated that there is a * * * sharing mechanism with the airport ticket service information system. Because booking, refunding and changing boarding are all completed under the real-name registration system registration certificate, this exit information may be more true, accurate and convenient than stamping, isn't it? How it works, which may be confidential, is difficult to find out. The parties concerned should try their best to arrange their trips and abide by the law.