VISIT VISA
If you are coming to the United Kingdom as a general visitor you are allowed to stay for up to six months. This section explains the different types of general visitor and what you are allowed to do as a general visitor to the United Kingdom. In general, you must show that:

• you want to visit the UK for no more than six months;
• you intend to leave the UK at the end of your visit, and
• you have enough money to support yourself and live in the UK without working or needing help from public funds.

You Can Visit UK if you fall in these Categories

• General Visitors: Visiting family, friends or as a tourist
• Business Visitors
• Academic Visitors
• Doctors coming for Professional and Linguistic Assessment Board Test (PLAB)
• Religious workers
• Sports Visitors
• Entertainer Visitors
• Visitors for private medical treatment
• Visitors coming to get married
• Parents of children at school in the UK
• Child Visitors
• Prospective Student Visitors
• Visitors in Transit

More Information http://www.ukvisas.gov.uk/en/howtoapply/infs/inf2visitors