I am a British citizen, but my spouse is not. My spouse has a 5-year time limited refugee leave to remain due to expire in Q1 2019.
We were given notice that at the end of our current tenancy the landlord would like to reclaim the property at the current tenancy term end in two months.
How can we prove that my spouse has the right to rent if the time-limit visa ends very soon after (1-2 months) the new place tenancy starts? Of course my spouse is eligible to apply for ILR at the end of that time period through SET(P) route, but how can this be proven to a prospective landlord?

Any advise would be welcome, thanks!