Tier 2 Dependent - Photocopy or original for Tenancy agreement

[JI92]

Hi all,
We have our appointment for Tier 2 Dependent (Unmarried Partner) Visa next week, and as such have to provide evidence of 2+ years continuous co-habitation. Will the Entry Clearance Officer requires an ORIGINAL for our Tenancy Agreements (i.e. the copy physically signed by all parties) or would a PHOTOCOPY / SCANNED COPY suffice?
Thank you.

[cyclina1]

of course original is better. also bring as much as evidence as possible.