Here is the key bit:
Tier 1 (Post-study work) transitional arrangement
From 11 July 2014, Tier 1 (Post-study work) applicants who do not have funding from seed
competitions or government departments (as described above) can only get points for
funding from registered venture capital firms or another source, if they can demonstrate that
they meet the requirements in part d of table 4 of appendix A of the Immigration Rules.
If Tier 1 (Post-study work) applicants cannot show they have been continuously engaged in
business activity since before 11 July 2014, they can only apply using £50,000 funds from a
listed seed funding competition or UK government departments (not from a venture capital
firm).
https://www.gov.uk/government/uploads/s ... .0_EXT.pdf
If you're outside the UK that would indicate that after July 11th 2014 you haven't been engaged in business activity (in the way they define it).