“The search for principle surely starts with the theme that is current through the legitimate expectation cases. It may be expressed thus. Where a public authority has issued a promise or adopted a practice which represents how it proposes to act in a given area, the law will require the promise or practice to be honoured unless there is good reason not to do so. …”
“This approach makes no distinction between procedural and substantive expectations. Nor should it. The dichotomy between procedure and substance has nothing to say about the reach of the duty of good administration. …”
“While the decision which is said to have broken the promise of ‘the fullest public consultation’ is fairly described as one which was dealing with a ‘high-level, strategic issue’, the promise itself was given at the highest level: in a Government White Paper. It would be curious, to say the least, if the law was not able to require the Government to honour such a promise, absent any good reason to resile from it.”
“Although the principles underlying the doctrine of legitimate expectation apply generally to assurances or promises made by public bodies of all kinds (see per Laws LJ in [Nadarajah] above), in the particular context of Town and Country Planning it is well understood by all of those involved, landowners, developers and local planning authorities, that even the most formally expressed planning policies are always susceptible to change. The catalogue of new and revised policies referred to in this judgment is an illustration of the constant process of change in operation. Thus, the ‘beneficiary’ of a statement of planning policy that is favourable to his interests can have no legitimate expectation that the policy will not be changed. At the most, he can have a legitimate expectation that the policy will be changed in accordance with the relevant procedure (if one is prescribed by an enactment, or advised in policy guidance); or if there is no established procedure in a manner that is fair in all the circumstances, for example, after giving interested parties an opportunity to make representations as to the implications of changing the policy.” (Emphasis added)