Molla ( established presence – date of application) Bangladesh [2011] UKUT 161 (IAC)
Current rules:
Appendix C - Maintenance (funds) wrote:14. An applicant will have an established presence studying in the UK if the applicant has current entry clearance, leave to enter or leave to remain as a Tier 4 migrant, Student or as a Postgraduate Doctor or Dentist and at the date of application:
(i) has finished a single course that was at least six months long within the applicant's last period of entry clearance, leave to enter or leave to remain, or
(ii) is applying for continued study on a single course where the applicant has completed at least six months of that course.
See also UKCISA.Appendix C - Maintenance (funds) wrote:22. An applicant will have an established presence studying in the UK if the applicant has current entry clearance, leave to enter or leave to remain as a Tier 4 migrant or Student and at the date of application:
(i) has finished a single course that was at least six months long within the applicant's last period of entry clearance, leave to enter or leave to remain, or
(ii) is applying for continued study on a single course where the applicant has completed at least six months of that course.