As one of the conditions for being able to go abroad, usually, you will be required to have a visa. You can make your own visa at the applicant institution and you can go abroad with the visa. In fact, when you decide to settle in England, you must be able to do an English language test to get a visa. You can do this at http://britishlifeskills.com.
Another thing you also need to apply for a visa is proof of your financial readiness. Unlike domestic travel, traveling abroad will certainly require a large number of costs, depending on the destination country and also the period of the visit that you will do. However, the destination country certainly does not want you to experience financial problems and difficulties when in their country, because this will cause problems for them too.
You must show financial capability that will be a guarantee for the smooth running of the trip there. This will usually be indicated by printing a savings account for the past 3 months.