“The overwhelming weight of authority shows that detriment is required. But the authorities also show that it is not a narrow or technical concept. The detriment need not consist of the expenditure of money or other quantifiable financial detriment, so long as it is something substantial. The requirement must be approached as part of a broad inquiry as to whether repudiation of an assurance is or is not unconscionable in all the circumstances. There are some helpful observations about the requirement for detriment in the judgment of Slade LJ in Jones v Watkins26 November 1987 . There must be sufficient causal link between the assurance relied on and the detriment asserted. The issue of detriment must be judged at the moment when the person who has given the assurance seeks to go back on it. Whether the detriment is sufficiently substantial is to be tested by whether it would be unjust or inequitable to allow the assurance to be disregarded—that is, again, the essential test of unconscionability. The detriment alleged must be pleaded and proved.”
“Mr Dowding [counsel for the appellant] devoted a separate section of his printed case to arguing that even if the elements for an estoppel were in other respects present, it would not in any event be unconscionable for Mrs Lisle-Mainwaring [the appellant] to insist on her legal rights. That argument raises the question whether ‘unconscionability’ is a separate element in making out a case of estoppel, or whether to regard it as a separate element would be what Professor Peter Birks once called ‘a fifth wheel on the coach’: Birks & Pretto (eds), Breach of Trust (2002), p 226. But Birks was there criticising the use of ‘unconscionable’ to describe a state of mind (Bank of Credit and Commerce International (Overseas) Ltd v Akindele[2001] Ch 437 , 455). Here it is being used (as in my opinion it should always be used) as an objective value judgment on behaviour (regardless of the state of mind of the individual in question). As such it does in my opinion play a very important part in the doctrine of equitable estoppel, in unifying and confirming, as it were, the other elements. If the other elements appear to be present but the result does not shock the conscience of the court, the analysis needs to be looked at again. In this case Mrs Lisle-Mainwaring’s conduct was unattractive. She chose to stand on her rights rather than respecting her non-binding assurances, while Mr Cobbe continued to spend time and effort, between Christmas 2003 and March 2004, in obtaining planning permission. But Mr Cobbe knew that she was bound in honour only, and so in the eyes of equity her conduct, although unattractive, was not unconscionable.”
“Drawing together this lengthy review of the authorities and looking at the matter historically, I suggest that what has happened may be summarised in this way. For over a century, starting in the 1860s, the courts of equity developed an equitable estoppel-based remedy, the aim of which was to prevent the unconscionable repudiation of promises or assurances about property (usually land) upon which the promisee had relied to his detriment. The normal and natural remedy was to hold the promisor to his promise, because that was the simplest way to prevent the unconscionability inherent in repudiating it, but it was always discretionary, and liable to be tempered by circumstances which might make strict enforcement of the promise unjust, either between the parties or because of its effect on third parties. While reliant detriment was a necessary condition for the equity to arise, the court’s focus on holding the promisor to his promise was not aimed at ‘protecting’ the promisee from the detriment, still less compensating for it. It was aimed at preventing or remedying the unconscionability of the actual or threatened conduct of the promisor, with the effect, but not the aim, that it tended to satisfy the expectations of the promisee.”
“I consider that, in principle, the court’s normal approach should be as follows. The first stage (which is not in issue in this case) is to determine whether the promisor’s repudiation of his promise is, in the light of the promisee’s detrimental reliance upon it, unconscionable at all. It usually will be, but there may be circumstances (such as the promisor falling on hard times and needing to sell the property to pay his creditors, or to pay for expensive medical treatment or social care for himself or his wife) when it may not be. Or the promisor may have announced or carried out only a partial repudiation of the promise, which may or may not have been unconscionable, depending on the circumstances.”
“5. Equitable remedies are generally more flexible than those afforded by the common law and they are always discretionary. … Under the doctrine of proprietary estoppel the specific enforcement of the promise or assurance is the primary remedy for the unconscionability threatened or occasioned by its breach. 6. Nonetheless there have been many cases where the court has recognised that full specific enforcement is not the appropriate remedy. The promise may be incapable of specific enforcement, for example where the underlying property is no longer in the hands of the promisor or his estate. The promised date for performance may lie so far in the future, or the date may be so unpredictable, that an order for performance on the promised date would be too insubstantial as a remedy. Or the early enforcement in full of a promise which, although repudiated, is years away from the due date for performance may give the promisee too much, or something radically different from that which was promised. The promisor may have other powerful equitable or moral claims on his bounty, so that the appropriation of the whole of the promised property to meet the claim of the promisee may be unjust to those other claimants, and be more the cause of unconscionable conduct than a remedy for it. Finally the magnitude of specific enforcement in full may be so disproportionate to the detriment undertaken by the promisee that something much less than full specific enforcement is needed to clear the conscience of the promisor. 7. These real-life difficulties (and those outlined above are only a few examples) have come to mean that in the field of proprietary estoppel equity is regarded as being at its most flexible in terms of remedy. …”
“10. … [T]he detriment is relevant to both the arising of the equity and to the remedy. Without reliant detriment there is simply no equity at all. This reflects the notion that it is the reliant detriment which makes it unconscionable for the promisor to go back on his promise. Detriment is relevant to remedy because a slavish enforcement of the promise may be so completely disproportionate to the detriment that it goes much further than necessary to put right the unconscionability inherent in the repudiation of the promise. … 11. But the harm caused by the repudiation of the promise is not the same as the detriment. That lies entirely in the past. It cannot be undone and is in no sense caused by the repudiation, or by any wrong at all (unless the original promise was dishonest, in which there would be a cause of action in deceit). In a case like the present the harm consists of the soul-destroying, gut-wrenching realisation of being deprived, and then actually being deprived over the rest of a lifetime, of an expected inheritance of land upon which the promisee has spent the whole of his life and work to date and which, in due course, he expected to be able to pass on to one or more of his own children, making the same promise to them as his father made to him. Again that cannot necessarily be valued with any reliability, not least if (as here) the expectation of inheritance still lies mainly in the future at the time when the promise is repudiated. Discount for the accelerated receipt of a future benefit is an imperfect tool, as has been vividly demonstrated in the field of personal injuries litigation.”
“75. The second (remedy) stage will normally start with the assumption (not presumption) that the simplest way to remedy the unconscionability constituted by the repudiation is to hold the promisor to the promise. … But the court may have to listen to many other reasons from the promisor (or his executors) why something less than full performance will negate the unconscionability and therefore satisfy the equity. They may be based on one or more of the real-life problems already outlined. … 76. If the promisor asserts and proves, the burden being on him for this purpose, that specific enforcement of the full promise, or monetary equivalent, would be out of all proportion to the cost of the detriment to the promisee, then the court may be constrained to limit the extent of the remedy. This does not mean that the court will be seeking precisely to compensate for the detriment as its primary task, but simply to put right a disproportionality which is so large as to stand in the way of a full specific enforcement doing justice between the parties. It will be a very rare case where the detriment is equivalent in value to the expectation, and there is nothing in principle unjust in a full enforcement of the promise being worth more than the cost of the detriment, any more than there is in giving specific performance of a contract for the sale of land merely because it is worth more than the price paid for it. … 77. There is in my view real merit in Lord Walker’s spectrum (as he would now prefer to call it) between on the one hand a case where both the promise and the detriment are reasonably precisely defined by the time when the promise is repudiated, where the one is in a sense the quid pro quo of the other although falling short of contract, and on the other hand where either or both are left much less certain. The “almost contractual” end of the spectrum is likely to generate the strongest equitable reason for the full specific enforcement of the promise if the reliant detriment has been undertaken in full, regardless of a disparity in value between the two. At the other end there may be much greater scope for a departure from full enforcement, even if there are no other problems making it just to do so. … 79. I can see no principled justification for treating a perceived need to abandon full enforcement as a reason for moving straight (or at all) to compensation on the basis of an attempt to value the detriment. That would suggest something approaching a binary choice which would be alien to the flexible and pragmatic nature of the discretion. I recognise that, in a case where there is perceived to be a large gap between the respective values of the promise and of the detriment this may leave the judge with a wide range of options with little in the way of rules as a guide. … But where the only objection to full enforcement is that it will be out of all proportion to the detriment then the court will, in the words of Dillon LJ in Burrows v Sharp, just have to do the best it can. 80. In the end the court will have to consider its provisional remedy in the round, against all the relevant circumstances, and ask itself whether it would do justice between the parties, and whether it would cause injustice to third parties. The yardstick for that justice assessment will always be whether, if the promisor was to confer that proposed remedy upon the promisee, he would be acting unconscionably. ‘Minimum equity to do justice’ means, in that context, a remedy which will be sufficient to enable that unconscionability question to be answered in the negative.”
“8. For many years Evan Hughes had let his children and others know of his intentions regarding what would happen to his estate after his death, namely that his shares in the company would be left to his son Gareth and daughter Carys equally, and the farmland would be left to his son Elfed. He executed his first will on18 December 1990 which put these intentions into effect. His second wife was given a right to reside for life in the bungalow at Arfryn, with remainder to his three children, who also shared the residuary estate equally. 9. After his second divorce, he executed a new will on7 August 2005 which repeated the provisions of the 1990 will as to the company shares and farmland and the residuary estate. The bungalow at Arfryn together with garden land and his personal effects were left to his daughter Carys. All other freehold and leasehold property was given to his son Elfed. A pecuniary legacy of£2,000 was given to each of his eight grandchildren.”
“8. For many years Evan Hughes had let his children and others know of his intentions regarding what would happen to his estate after his death, namely that his shares in the company would be left to his son Gareth and daughter Carys equally, and the farmland would be left to his son Elfed. He executed his first will on18 December 1990 which put these intentions into effect. His second wife was given a right to reside for life in the bungalow at Arfryn, with remainder to his three children, who also shared the residuary estate equally.” “78. Gareth Hughes to his credit in cross-examination accepted that it had long been an understanding in the family that he and his sister would inherit the shares in the company and his brother would inherit the farm and the land. He said that his father did not say this to him, but his sister implied it. In my judgment there is an impressive body of evidence that there was such an understanding over many years prior to the death of Elfed Hughes which his father shared within the family and to others. …” “113. I have already made some findings as to the understanding which Evan and Elfed Hughes had over many years as to what would happen to the land of the former after his days. It is true that some of the witnesses understood this in terms simply of the then current testamentary intention of the former. But as between father and son I am satisfied that their understanding went far beyond this. Particularly telling in this regard is the evidence of Gwen Hughes in her witness statement that her late husband always used to dismiss her when she told him, in the context of tending to his father’s stock and land, that he was spending too much money on his father. Her husband would respond in Welsh ‘da ni’n dallt ein gilydd’, which in English means ‘we have an understanding together.’ She said that she knew that the understanding was that her husband would inherit the land. When she was cross-examined about how she knew, she replied that her husband told her that his father said that the land would be his. 114. That evidence is supported by Stephen Hughes who heard such conversations between his parents. He said he heard such conversations many times ever since he can remember. His mother would ask why they were paying bills in respect of her father-in-law’s land and her husband replied that it was beneficial as he would own it one day. 115. I accept that evidence. In my judgment there was a sufficiently clear representation by Evan Hughes to that effect over many years.”
“116. As for reliance, it is not in dispute that Elfed Hughes lived for farming, worked very hard and successfully at it, maintained very high standards, and produced prize winning stock. This was clear from all the evidence including recordings of two television programmes in which he featured and which I have watched. Mr Gomer submits that that is why he farmed his father’s land and not because of any promise on that part of his father. That may have been a part of it. However he maintained his father’s stock and land for some 38 years. When he purchased farmland of his own in 1999, it was next to his father’s farm so that he could work on both together. He built a bridge to link the two and a large cattle shed to keep his own and his father’s cattle. Again, the conversations which he had with his wife as set out above are telling and in my judgment in that context it is likely that he did so also in reliance upon the representations.”
“12. Elfed used to be up at the crack of dawn and would be out of the house by sunrise to go to work for the building company or the farms. He would come home roughly about five to have his tea and then he used to go straight back out to see to the farms: Bwchanan, Yr Efail and Hafod Llin Bach. Elfed used to work hard on all three farms and spend an equal time dealing with them all. He also farmed rented farms called Rhosbeirio and Rhyd y Groes. 13. During the summertime, Elfed would get home at approximately nine in the evening, and sometimes much later when he was very busy. Between October to December, it is a very quiet time for farmers and as a result Elfed could finish work at approximately six o’clock some evenings. … 15. Because of Elfed’s commitment to the farm, he did not have much time to spend with the children when they were young. Elfed looked after the farm and I brought the children up. we held a very traditional household; tea would always be prepared when Elfed returned home and I undertook all of the domestic chores in the house. … 17. Holidays were very restricted for the family due to Elfed’s work commitments. It always had to be at a time of year when the farm was at its quietest. …”
“it is not in dispute that Elfed Hughes lived for farming, worked very hard and successfully at it, maintained very high standards, and produced prize winning stock.”
“Farming was his life. If anyone came to the house, he would like to show his cattle and sheep—that was his hobby, that was his life—it meant everything to him.”
“1 was also aware that Gareth was to inherit the shares my grandfather owned in the family building company, along with Carys. The company had always been very successful and was well-regarded in the local area. My father was a shareholder in the building company and would occasionally work on the building site during quiet periods on the farm, but this became less frequent in recent years. My father concentrated his efforts on the farm, with Carys and Gareth concentrating on the building company.”