If a provision of the rental agreement imposes on you or your landlord less than your legal rights, that provision cannot be enforced. In Scotland, your landlord must, in most cases, present a written lease. In particular, your landlord must submit a written lease if you are a tenant of a dwelling in the public sector or if you are an insured or briefly insured tenant of a private lessor. However, it is important that a third party certifies and signs an agreement, such as.B. an AST, in order to provide a level of security to both the landlord and the tenant. A party could refuse to sign the agreement; indicating that they were forced to sign it or that the signatures were falsified. But some other situations make it particularly advisable to have a witness. One of them is if the owner rents at a price that goes down from the market value.. . .