A break clause in a lease gives you the automatic right to terminate the lease at one or more specified dates. You will still have a problem if you want to get out of the lease before the specified date, or after the specified date has passed.
Be careful. Break clauses often require a tenant to give a set period of notice to bring the lease to an end. There may also be conditions such as a requirement that you have complied with your obligations under the lease to pay the rent and keep the premises in repair. If you fail to fulfil the conditions you will no longer have the right to terminate the lease.
