A renewal looks like the simple option. Sometimes it is; sometimes a fresh new tenancy is cleaner. Knowing which is right depends on what has changed since the previous start.
When renewal is fine
Same tenants, same property, no change in rent except a modest review. A simple memorandum extending the agreement on the same terms is sufficient.
When a new tenancy is better
Changes to the parties (one tenant leaves, another joins), changes to deposit protection requirements, or any material change to the terms. Starting fresh is cleaner than amending repeatedly.
Either way, re-confirm the documentation
Prescribed information, gas safety certificate, EPC, How to Rent guide — all should be re-issued where any doubt exists.
