When you are given permission to enter the UK, you will be told the conditions of your stay. These conditions will be given to you in writing. If you arrive with a tour group, the notice may be given to the group leader. In other cases, the conditions will be written in your passport. If you don't have a passport, they will be in a letter from the immigration authorities.
Unless you are allowed to settle here straight away, the conditions will include a time limit. Depending on your reason for coming to the UK, you are also likely to be barred from having 'recourse to public funds' (claiming benefits, for example).
You may not be allowed to work or you may be allowed to do only some types of work. Visitors cannot do any work (even if it is not paid). Students on courses of six months or more have restricted permission to work. They can work full-time during their holidays and part-time during the term.
If you are a citizen of a country outside the Commonwealth and you come here to work or for business (and sometimes as a student), you may also have to register with the police.
Very occasionally, an immigration officer will tell someone coming to settle here that they must report to a medical officer (for example, if they have a particular contagious disease).
If you break the conditions of your permission to stay in the UK, you are committing a crime, and you may be sent back ('removed').
What if I want to stay longer than I was originally allowed?
If you want to stay longer than the time shown in your passport, you need to apply again. You can apply at one of the five Home Office Public Caller Units around the country, although they don't all deal with every kind of application. You can also apply by post.
There are different forms for different kinds of application. You must use the right one or your application will not be accepted. You must fill in the form carefully and make sure you include all the documents the form asks for (for example, your passport, proof of the money you have, or your student registration).
If you don't, your application will not be looked at and your form will be sent back to you.
The only circumstances in which you do not need to use a form are:
You need to pay a fee for many applications and your application will not be dealt with if you do not send the right amount of money. It is cheaper to apply by post, and it will cost you more if you apply at the Home Office in person.
If the Home Office agree to give you more time to stay, they will place a sticker, known as a residence permit, in your passport.
Supporting yourself
In almost all cases where you are given permission to come to the UK, you must be able to support yourself and any family members with you 'without recourse to public funds'. This includes:
If you are coming for a short time, you must have a place to stay. This can be with friends or family, or in a hotel or guesthouse. You also need enough money to live on, including paying for where you are staying.
If you are coming to live here, you need somewhere suitable to live and enough money for your family to live on, without claiming benefits. You do not need to own the place where you live you can stay with relatives, as long as their house or flat won't become overcrowded.
If you are joining someone who lives here, you will not usually be able to claim benefits. If the person who lives here claims benefits, they probably won't be able to include you as a dependant, for example, in working out whether they would qualify for certain benefits meant to help people with a low income.
If you are receiving benefits and you are trying to sponsor a relative to come and live in the UK, you should get expert advice. See 'Further help' for where you can find advice.