To visit britain you would need to have a valid passport. The citizens of Europe would not have many problems to get cleared, whereas citizens of other countries would require the clearance certificate to enter the country. All these documents are taken care of if you plan your trip through a travel agent. They have enough experience in handling these issues and would help you out very quickly. Before going on your trip to britain you would require to have the currency of the country to meet with your expenses. It would be best to have some money exchanged from your country to be on the safer side. The agency can also help you to get currency of the destination country. There are sites like visitbritain.com which has all the required details regarding a visit to the country. Before you visit britain go through the details given in the site and decide on the places you would like to visit. If arranged by a travel agent they would also get you the best deals on sightseeing. The weather in England is very pleasant and rains at times. If your trip is well planned you could have a wonderful vacation in Britain.