If you are applying to come to Uk, you must beware of dubious websites. You must either write the nearest British consulate/embassy or visa centre in your country or nearest to you or visit the following website: http://www.ukvisas.gov.uk
This is the official British government website for VISA Services. You will find all you need to do in the website.
You can watch an overview of the work of UK visas by clicking below: