If you are under 18 and wish to come to the UK for up to 6 months in order to study, you can apply as a child visitor under Appendix V: Visitor of the Immigration Rules. There are a number of conditions that must be met for a child to obtain a Visit Visa, including having sufficient funds to support themselves during their stay, adequate accommodation in the UK and the consent of their parents or legal guardian.  

Fees – Full Representation [LINK]

Fees – Consultancy Services [LINK]