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Advising Ukeme

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October 08, 2026
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This advice will consider the legal position of Ukeme in relation to the claims made by the executors of her late landlord, Iboro. The executors are claiming arrears of rent and full rent from August 2023, and are refusing to honour Iboro’s promise of £35,000. This advice will analyse Ukeme’s situation using the principles of contract law, specifically the equitable doctrines of promissory estoppel and proprietary estoppel, to determine her rights and liabilities.

The Claim for Rent Arrears (January 2022 – August 2023)

The first issue concerns the demand by Iboro’s executors for arrears of rent, calculated as the unpaid half of the full rent, for the period from January 2022 to August 2023. Ukeme’s liability depends on whether Iboro’s promise to accept half rent is legally binding.

Under the common law, an agreement to vary an existing contract requires fresh consideration from both parties. The rule in Pinnel’s Case (1602), affirmed by the House of Lords in Foakes v Beer (1884), establishes that part payment of a debt is not valid consideration for a promise to waive the remainder. In this case, Ukeme was already under a contractual obligation to pay the full rent. By paying half, she was not providing any new consideration for Iboro's promise to accept a reduced amount. Therefore, at common law, Iboro’s promise is unenforceable, and his executors would be entitled to claim the arrears.

However, Ukeme may be able to rely on the equitable doctrine of promissory estoppel as a defence. This doctrine was famously articulated by Denning J in Central London Property Trust v High Trees House [1947] KB 130. Promissory estoppel can prevent a person (the promisor) from going back on a clear promise, which was intended to be acted upon and was in fact acted upon by the other person (the promisee), even if the promise is not supported by consideration. For the doctrine to apply, several conditions must be met:

  1. A pre-existing legal relationship: There was a clear landlord-tenant relationship between Iboro and Ukeme.
  2. A clear and unequivocal promise: Iboro’s statement, “I quite understand your position, and I will take half rent until your son graduates from university,” constitutes a clear promise not to enforce his full legal right to the rent.
  3. Reliance: The promisee must have acted in reliance on the promise. Ukeme relied on the promise by paying the reduced rent and managing her finances accordingly. It is not necessary for the reliance to be detrimental, merely that the promisee has altered their position (WJ Alan & Co v El Nasr Export & Import Co [1972] 2 QB 189).
  4. Inequity: It must be inequitable for the promisor to go back on the promise. Given Ukeme’s financial difficulties, which Iboro explicitly acknowledged, it would likely be considered inequitable for his estate to now demand the waived portion of the rent for that period (D&C Builders v Rees [1966] 2 QB 617).

The effect of promissory estoppel is typically suspensory, meaning it suspends the promisor's rights, which can be revived upon giving reasonable notice (Tool Metal Manufacturing Co Ltd v Tungsten Electric Co Ltd [1955] 1 WLR 761). However, Iboro's promise had a specified end point: "until your son graduates". This means the right to full rent would automatically revive upon his son’s graduation in 2024. For the period during which the promise was active, the High Trees case suggests that the right to the payments is extinguished. Lord Denning stated that the landlord could not have sued for the arrears during the war years.

Applying this to Ukeme’s case, she can use promissory estoppel as a defence against the claim for the arrears of rent from January 2022 to August 2023. As the promise covered this period and it would be inequitable to enforce the original terms retrospectively, a court is highly unlikely to allow the executors to recover this money.

The Situation from August 2023 Onwards

In August 2023, the situation changed following a new statement by Iboro. This statement has two components that must be analysed separately: the waiver of all future rent and the promise of £35,000. These issues are central to the executors’ second claim for full rent since August 2023 and to Ukeme’s potential claim for the promised sum.

The Waiver of Rent from August 2023

Iboro’s statement, “We will forget the rent, I have let you off; I want no more rent,” is a further promise to vary the tenancy agreement. As with the previous promise, it is not supported by consideration from Ukeme. Therefore, she must again rely on promissory estoppel.

The requirements for promissory estoppel appear to be satisfied. The promise was clear and unequivocal. Ukeme relied on it by ceasing to pay rent. It would be highly inequitable for the executors to now demand this rent, especially as the promise was made in recognition of the care Ukeme had provided to Iboro. Unlike the first promise, this one does not have a specified end date. The words "I want no more rent" suggest an intention to permanently extinguish the rent obligation. Where a promise is intended to have a permanent effect and the promisee cannot be returned to their original position, the estoppel may have a permanent rather than suspensory effect. It is arguable that Iboro intended to waive the rent for the remainder of her tenancy. Therefore, Ukeme has a strong defence against the claim for full rent from August 2023 until Iboro's death.

Ukeme’s Claim for £35,000

Iboro’s promise of “£35,000 towards a flat of your own” cannot be enforced as a contract because Ukeme provided no consideration for it. The care she provided was in the past, and past consideration is not good consideration. However, Ukeme may be able to enforce the promise through the doctrine of proprietary estoppel.

Proprietary estoppel can be used to create a cause of action (as a 'sword'), unlike promissory estoppel which is generally defensive (a 'shield'). It arises where it would be unconscionable for a person to deny something which they have allowed or encouraged another to assume to their detriment. The modern requirements were summarised in Thorner v Major [2009] UKHL 18, and consist of an assurance, reliance, and detriment, in a context where it would be unconscionable to go back on the assurance.

  1. Assurance: Iboro made a clear assurance to Ukeme: “I promise you £35,000 towards a flat of your own. Make some inquiries for something suitable”. This was made in front of his children, adding to its seriousness and clarity. The assurance was specific as to the amount and its purpose.
  2. Reliance: The claimant must rely on the assurance. The facts explicitly state that "In reliance on Iboro’s statement, Ukeme signed a contract in late February of 2025 to buy a two-bedroom house". This is a clear and significant act of reliance. The earlier act of making inquiries also constitutes reliance.
  3. Detriment: The reliance must lead to detriment. By signing a legally binding contract to purchase a house for £250,000, Ukeme has exposed herself to a substantial financial liability. This is a clear and serious detriment, far more than simply making inquiries (Gillet v Holt [2001] Ch 210).
  4. Unconscionability: All of the above factors must make it unconscionable for the promisor, or in this case their estate, to go back on the promise. Given Iboro’s clear promise, Ukeme’s significant and foreseeable reliance, and the life-changing detriment she has incurred, it would be deeply unconscionable for the executors to refuse payment.

Where proprietary estoppel is established, the court has a discretion to award a remedy to satisfy the "equity" that has arisen. The court aims to provide the minimum award necessary to do justice (Jennings v Rice [2002] EWCA Civ 159). The remedy should be proportionate to the detriment suffered. In Ukeme's case, her expectation was a specific sum of £35,000. She relied on this specific sum to enter into a contract to buy a house. Therefore, it is highly likely that a court would find that the minimum equity to do justice is to order the estate to pay her the full £35,000, as this directly reflects both her expectation and the loss she would suffer if the promise is not kept.

Conclusion and Advice

In conclusion, Ukeme appears to be in a strong legal position.

  1. Regarding the claim for rent arrears from January 2022 to August 2023: She can raise the defence of promissory estoppel. Iboro’s promise to accept half rent was clear, she relied on it, and it would be inequitable for the estate to now claim the arrears. This part of the executors’ claim is likely to fail.
  2. Regarding the claim for full rent from August 2023: She can again rely on promissory estoppel. Iboro’s promise to waive all future rent was clear and intended to be permanent. Her reliance makes it inequitable for the estate to demand payment. This claim is also likely to fail.
  3. Regarding the promise of £35,000: Ukeme has a strong claim in proprietary estoppel against Iboro's estate. She can demonstrate a clear assurance, reliance, and significant detriment, making it unconscionable for the executors to refuse payment. A court is likely to order the estate to pay her the £35,000.

Ukeme should be advised to contact a solicitor. The solicitor can write to the executors outlining her legal position in respect of both the rent claims and her own claim for £35,000 against the estate. If the executors persist, she would be well-advised to defend any court action for the rent and to initiate her own claim for the £35,000.

References

McKendrick, E. (2020) Contract Law: Text, Cases, and Materials. 9th edn. Oxford University Press.

Central London Property Trust v High Trees House [1947] KB 130

D&C Builders v Rees [1966] 2 QB 617

Foakes v Beer (1884) 9 App Cas 605

Gillet v Holt [2001] Ch 210

Jennings v Rice [2002] EWCA Civ 159

Pinnel’s Case (1602) 5 Co Rep 117a

Thorner v Major [2009] UKHL 18

Tool Metal Manufacturing Co Ltd v Tungsten Electric Co Ltd [1955] 1 WLR 761

WJ Alan & Co v El Nasr Export & Import Co [1972] 2 QB 189

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