Immigration implies the long term permanent residence from one nation-state to another by the immigrants however tourists and short-term visitors are not considered immigrants. However, seasonal labour migration is often treated as a form of immigration. Immigration is the act of leaving one's country to settle in another foreign country. People move to another country for various reasons. Some leave their homeland to avoid starvation or to escape unbearable family situations. Many move to avoid revolution and war. Others are escaping religious or political persecution. Some immigrants were brought to a new land against their will, as slaves. Some immigrate to be reunited with their loved ones. Some move in search of adventure.

The modern idea of immigration is related to the development of nation-states and nationality law. Citizenship of a nation-state confers an inalienable right of residence in that state, but residence of immigrants is subject to conditions set by immigration law. The nation-state made immigration a political issue: by definition it is the homeland of a nation defined by shared ethnicity and/or culture, and in most cases immigrants have a different ethnicity and culture. This has led to social tensions, xenophobia, and conflicts about national identity, in many developed countries. who legally entered a country but nevertheless overstay their visa in order to live and/or work therein.

Coming to the UK

The UK offers a wide range UK visa options like UK immigration, UK residency, UK work permit. A UK work permit and UK HSMP Visa are two categories that help towards UK residency application. Highly Skilled Migrant Programme (HSMP UK) allows you to enter the UK before finding a job means there is no need UK employer to sponsor your work permit. Its biggest benefit is that you can work for any employer in UK while the work permit sponsored by the UK employer allows you to work only with that employer who sponsors your work permit in UK.Whether you have a UK work permit or UK HSMP both will allow you to work for that employer for up to 5 years and counts towards UK residency in the same way.

People who are outside the United Kingdom, they need to apply for entry clearance before traveling. Entry clearance is issued for granting permission for the holder to travel to or enter the United Kingdom. It an be divided into four categories; a visa - required by a visa national that is those countries or territories whose nationals or citizens require a visa to enter the United Kingdom, an entry certificate - issued to non-visa nationals; the EEA Family Permit - issued to the family members of EEA nationals; and an exempt vignette - issued to those people who are exempt from the requirements of the Immigration Act 1971.UKvisas, a joint Home Office and Foreign and Commonwealth Office department, operates the entry clearance process, through visa sections in some British diplomatic posts around the world.

You may need to apply for entry clearance depending upon your nationality and the purpose for which you wish to come to United Kingdom.UKvisas have a visa enquiry form on their website which can be used to determine whether you need entry clearance as well as providing details of the nearest visa section where you can make your application. The person applying for entry clearance must be outside of the United Kingdom and Islands at the time of application; this is the requirement under Immigration rules.

If you are applying to come and stay in the United Kingdom for a long time, or for settlement then you should apply for entry clearance at the United Kingdom post in the country where you are normally and legally resident. But if you are temporarily staying in the country where you apply, the UK visa section may not accept your application, or there may be a considerable delay before a decision on your application is made. You must ensure to obtain the appropriate entry clearance before traveling to the United Kingdom if you are looking for entry to the United Kingdom for more than six months. Within the seven days of arriving to United Kingdom, you must register your stay with the police. To register yourself you will need your passport and two passport size photographs.

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