This report provides an analysis of lease agreements under the Landlord and Tenant Act 1954. It discusses the two types of tenancies - contracted-out and protected - and the rights of tenants in each category. The report also examines the implications of Section 25 of the Act, which allows landlords to terminate new leases. Additionally, it considers the impact of default in payment by an occupier on a commercial property lease. The conclusion highlights how these legal considerations can affect the value of a property portfolio.