13.2 Dependants over the age of 18
Dependants over the age of 18 of foreign and Commonwealth HM Forces members (including Gurkhas) who are not otherwise covered in this guidance would normally need to qualify for settlement in the UK under a specific provision of the Immigration Rules.
In exceptional circumstances discretion may be exercised in individual cases where the dependant is over the age of 18.
However, settlement applications from dependants over the age of 18 who are the children of serving foreign and Commonwealth HM Forces members (including Gurkhas) who meet the requirements of a parent should normally be approved, provided the dependant has previously been granted limited leave to enter or remain in the UK as part of the family unit and they wish to continue to reside and be educated in the UK.
Source:
http://www.ukba.homeoffice.gov.uk/sitec ... iew=Binary
GUIDANCE FOR FORMER GURKHA SETTLEMENT VISA APPLICATIONS
If you are applying as a dependent relative and are over 18 years (including the parent or grandparent of the main applicant) please complete the “other dependant relatives (Gurkhas) formâ€