If you signed a tenancy agreement before May 1st, 2026 that included a break clause, you may have used or considered using it to end your tenancy before the fixed term expired. Break clauses were important because without one, you were locked into the fixed term and couldn't leave early without your landlord's agreement or without being liable for the remaining rent.
Since the Renters' Rights Act 2025 abolished fixed-term tenancies and made all tenancies periodic, break clauses have become redundant. You can now end your tenancy at any time by giving two months' notice. There's no minimum period, no need to invoke a specific clause, and no restriction on when you can serve notice.
If you're still living in a property under a tenancy agreement that was signed before May 2026, any break clause in it is effectively superseded by your statutory right to give two months' notice under the new periodic tenancy regime.