Step 1:
Depending on the country you are from, you might be able to visit the UK without a visa or by applying for a visa waiver.
Step 2:
Apply for a Visa
Find out how to apply for a Standard Visitor visa £95 to £822
There is a different way to apply if:
Or Apply for an EEA family permit
You may be able to visit on an EEA family permit if you have a family member who is a citizen of:
an EU country
Iceland, Liechtenstein, Norway or Switzerland
Or Apply for a visa waiver
Apply for a visa waiver if you have a passport from:
Kuwait
Oman
Qatar
the United Arab Emirates