Break clauses: a landlord’s invoice can undermine strict pre-conditions of the break clause

Sterling House Ltd v International Baccalaureate Organisation (UK) Ltd [2026] EWHC 2680 (BP), HHJ Jarman KC sitting as a High Court judge, Business and Property Courts in Wales

Summary

As a result of the interaction between the landlord and the tenant prior to the break date in relation to the sums due under the lease the tenant's break was held to be valid even though the tenant had not strictly complied with the pre-conditions of the break clause. 

The decision is a useful reminder that information provided by the landlord or their agents in the run-up to a break date can matter as much as the obligations in the lease itself.

Background

The lease contained a tenant break exercisable on 23 February 2026 subject to the requisite notice.  The notice was not at issue in this case.  

The lease required payment of annual rent in advance on the usual quarter days.  In addition insurance rent was payable on demand. The break date was conditional on payment of both sums. 

On 6 and 10 February 2026 the tenant's facilities manager emailed the landlord’s agents asking for invoices so that outstanding sums could be paid prior to the break date. The agents sent an invoice for rent from 22 December 2025 to 23 February 2026 only (rather than rent for the full December quarter). The tenant paid the invoice on 13 February 2026. In the intervening period there were also exchanges and meetings, at the premises and elsewhere, dealing with the hand over on the break date.

At 3pm on Friday 20 February 2026, having sent an email demand to the tenant’s address in Singapore, the landlord also hand-delivered an insurance rent demand to the tenant's registered office and it was paid by faster payment on 25 February.

The issues

The court was required to consider:

• Whether the landlord was estopped from relying on the unpaid balance of the quarter's rent?
• Whether the estoppel extended to the insurance rent, and whether  the tenant had a reasonable opportunity to pay that demand before the break date?

The decision

The claim was dismissed. 

The landlord was estopped from relying on the unpaid balance of the quarter's rent. The court found that the agents’ standard covering email's reference to "the terms of your lease" concerned timing rather than amount, and that the invoice itself was a clear representation of the amount that the tenant needed to pay before the break date. The tenant's reliance on the invoice was reasonable. 

The court found that the estoppel also covered the insurance rent. The Friday afternoon demand did not allow reasonable time to react before midnight on the following Monday.

Significance

The court did not question the strict line in Marks & Spencer v BNP Paribas [2015] UKSC 72 that clear wording is needed to apportion rent to a break date. 

Instead, it reached a tenant-friendly result through estoppel, applying the reasoning in PCE Investors v Cancer Research UK [2012] EWHC 844 (Ch). The case is significant as it demonstrates that clear and unequivocal actions of the landlord, or its agents, may undermine the strict pre-conditions of the break clause. 

Practical implications

• Landlords:  
  • Ensure invoices issued ahead of a break date reflect everything the lease requires or expressly state that they are not a statement of sums needed to satisfy break conditions.
  • Issue any on-demand sums (such as insurance and service charge) well ahead of the break date; late demands risk being ineffective to defeat the break.
• Tenants:
  • Request written confirmation of all sums due in good time and keep a clear record of the request and response.
  • It remains prudent to review the terms of the lease and pay the full quarter where the lease does not apportion; estoppel is a fallback, not a strategy.

Key takeaways

• A landlord's invoice can amount to a clear representation of the amount that the tenant needs to pay to satisfy the pre-condition of the break clause.
• Estoppel can save a break that would otherwise be invalid due to failure to satisfy the pre-condition of the break clause.
• On-demand sums need to give the tenant a reasonable opportunity to make payment.