Renewal of Prescribed Information

Tenancy Deposits

Hello,

In November 2013, allowed my AST to become a periodic tenancy (by simply letting the agreement roll over, without amendment). The tenants continue to pay the rent and I have the deposit under the TDS deposit guard system. Last year I re-served the prescribed information and leaflet. The tenancy has continued and now, as we are one year on, do I need to re-serve the prescribed information and certificate or does the originally served document serve for the remainder of the periodic tenancy?

Many thanks
NIkc