Can I apply using this form?
You should use application form SET(M) if you:
currently have temporary permission to remain in the UK as the husband, wife, civil partner or unmarried/same-sex partner of a British citizen or a person settled here;
have lived here for
2 years in this category; and
are still planning to live together .................
If we gave you permission to remain in the UK as an unmarried or same-sex partner and are now applying to settle here as the husband, wife or civil partner of the same person, your 2-year qualifying period started on whichever is the later of these two dates:
the date when we gave you permission to remain as an unmarried or same-sex partner; or
the date when you arrived in the UK.
Please do not send us your application more than 28 days before the end of your 2-year qualifying period. If you do, we may refuse your application and we will not refund the fee. However, you must apply before your current permission to remain in the UK ends.