When an invoice defeats the lease: Lessons from Sterling House

Break clauses can be unforgiving. If a tenant fails to comply with a condition attached to a break it can find itself tied into a lease for years longer than intended, often at considerable cost.

But what happens when the tenant’s failure to comply is the result of information provided by the landlord or its agent?

The recent High Court decision in Sterling House Ltd v International Baccalaureate Organisation (UK) Ltd [2026] EWHC 2680 (BP) shows that landlords need to be just as careful as tenants when a break date approaches.

The problem

The tenant had exercised a break option to terminate its lease of Sterling House at Cardiff Gate Business Park on 23 February 2026. One of the conditions of the break was that the rents due under the lease had been paid. Although the proposed break date fell part way through a quarter, the annual rent was payable quarterly in advance. Ahead of the break date, the tenant asked the landlord’s agents what rent was outstanding. The agents supplied an invoice calculated only up to 23 February. The tenant paid it.

The landlord subsequently argued that this was not enough. On the strict terms of the lease, the tenant should have paid the whole quarter in advance, leaving approximately £45,000 outstanding. If the landlord was right, the break would fail.

There was also approximately £2,300 of outstanding insurance rent. The demand for that sum was hand delivered at around 3pm on the Friday before the break date on the following Monday.

The Court sides with the tenant

The High Court held that the break was effective.

While the lease required the quarterly rent to be paid in advance, as the landlord’s agent had provided an invoice calculated to the break date, the landlord was estopped from relying on the additional rent which would otherwise have fallen due under the lease.

The insurance rent did not save the landlord’s position either. The Court concluded that the tenant had not been afforded a reasonable time to make payment when the demand was served late on the Friday immediately before the Monday break date.

The result is striking. A tenant which, on the face of the lease, had not paid everything required by the break date was nevertheless able to terminate the lease.

The practical lesson for landlords

The case is an important reminder that break clauses are not only about what the lease says. What a landlord and its agents do and say in the run-up to the break date can also matter.

Landlords and managing agents should be cautious when providing rent statements, invoices or confirmation of the amounts required from a tenant approaching a break date. If those communications suggest that a particular figure represents everything the tenant needs to pay, the landlord may find it difficult subsequently to take a different position.

That does not mean tenants can afford to be relaxed about break conditions. The safest approach remains to identify every condition well in advance and comply with it strictly. Where rent is payable quarterly in advance, a tenant should not simply assume that it can apportion the payment because its break date falls midway through the quarter.

For landlords, however, Sterling House adds an equally important message: if you intend to insist upon strict compliance with the lease, make sure your own communications are consistent with that position. A routine invoice issued at the wrong figure could ultimately make the difference between a lease continuing and coming to an end.

How we can help

Break clauses leave little room for error, and Sterling House shows that the position can depend not only on the wording of the lease but also on how the parties communicate in the run-up to the break date.