"In this case, the use permitted by the 1961 permission has simply dwindled away such that it is now very many years since there was any appreciable use as a caravan site. Nevertheless, the 1961 planning permission was implemented, it has not been revoked and it has not been superseded by the use of the site for a different permitted or lawful purpose. The permission may therefore be relied upon for the use of the land as a caravan site for up to 80 caravans, subject to the use being undertaken in accordance with the 1971 [he must have meant 1961] permission."
"(1) Without prejudice to the provisions of this Part as to the duration, revocation or modification of planning permission, any grant of planning permission to develop land shall (except in so far as the permission otherwise provides) inure for the benefit of the land and of all persons for the time being interested in it."
"whether a planning permissions for the development of land can be abandoned by act of a party entitled to its benefit."
"There is no principle in the planning law that a valid permission capable of being implemented according to its terms can be abandoned."
“Viewed as a question of principle, therefore, the introduction into the planning law of a doctrine of abandonment by election of the landowner (or occupier) cannot, in my judgment, be justified. It would lead to uncertainty and confusion in the law, and there is no need for it. There is nothing in the legislation to encourage the view that the courts should import into the planning law such a rule...”
"The third class of case comes nearer to the facts and law of the present appeal. These cases are concerned not with existing use rights but with two planning permissions in respect of the same land. It is, of course, trite law that any number of planning permissions can validly co-exist for development of the same land, even though they be mutually inconsistent. In this respect planning permission reveals its true nature -- a permission that certain rights of ownership may be exercised but not a requirement that they must be. But, what happens when there are mutually consistent permissions (as there may well be) and one of them is taken up and developed? The answer is not to be found in the legislation ..."
"The Divisional Court held that the two permissions could not stand in respect of the same land, once the development sanctioned by the second permission had been carried out. The effect of building on Site ‘B’ was to make the development authorised in the earlier permission incapable of implementation."
"there is no principle in planning law that a valid permission, capable of being implemented according to its terms, can be abandoned."
"...the development in the present case was implemented, or completed, as soon as the change in use was made. Accordingly, this present case does not fall within the terms of the general principle as stated by Lord Scarman in Pioneer."
"We accept Mr Kelly's submission that, where the development for which planning permission is required is a material change of use, the permission is to change from use A to use B and is not merely a permission to use the property for use B for the indefinite future. We appreciate that most, if not all, planning permissions are expressed in the latter form, but that is no guide to the true construction of the 1971 Act."
"There is implicit in this reasoning a conclusion that the planning permission granted in 1969 for use as a light industrial building was spent once the change was complete and did not cover the further change to light industrial use in 1977. The rest of Lord Fraser's speech, dealing with the construction of Section 23(9), follows on that implied assumption. Indeed, there would be no point in considering the effect of that Section if the 1977 development was already covered by the 1969 permission."
"This seems to us inescapable from the decision in Young and we are encouraged in reaching this conclusion and it follows the express finding of the Court of Appeal in Young's case."
"The concept of abandoning the use is, in my judgment, best confined to the topic of established use of rights where it is a well recognised concept: see Hartley v Minister of Housing and Local Government[1970] 1 QB 413 ."
"23. In the Pioneer case, the House of Lords was considering the question whether or not a planning permission which was capable of implementation could be abandoned. It was concluded that such a permission could not be abandoned, but it is clear from the speech of Lord Scarman that he accepted that a use which had become immune from enforcement action could, in certain circumstances, be abandoned (see page 143B.) 24. Moreover, Mr Lewis at one stage accepted the proposition in Panton that a use which has become immune from enforcement action is capable of being abandoned. Thus it is plain that a use which has become immune and a use which has the benefit of a planning permission are not identical for all purposes under the 1990 Act."