It is now clear that leases cannot be assigned to the tenant’s guarantor but serious issues arise out of the recent High Court case of EMI Group Limited v O&H Q1 Limited which specified that any lease assignment by a tenant to its guarantor is void. This means that the assignment is not effective, the lease is still held by the previous tenant and the intended assignee remains the guarantor of that previous tenant (and does not become the new tenant of the lease). In addition, be aware that the court’s decision applies retrospectively.