I'm pretty sure the wording of the exemption to the act goes something like that the landowner can't be prosecuted for a stay up to two nights. This is whether he knows about you or not. So I think you are wrong, we can claim to be not causing a breach of the 1960 Act by the landowner.
For example he could approach you, and you can say you'll be off in the morning. He can say "it's OK by me, but I may be prosecuted if I allow you to stay for sanctioning a camp without planning on my land" You can counter with "no you can't because I am only here for one night and there is an exemption for stays of up to two nights by a single unit"
All hypothetical of course, but it's as well to know where you stand.
Hi Firefox
This is the wording in the Caravan Sites and Control of Development Act 1960'
FIRST SCHEDULE
CASES WHERE A SITE LICENCE IS NOT REQUIRED
Use within curtilage of a dwellinghouse
1. A site licence shall not be required for the use of land as a
caravan site if the use is incidental to the enjoyment as such of a
dweflinghouse within the curtilage of which the land is situaited.
Use by a person travelling with a caravan for one or two nights
2. Subject to the provisions of paragraph 13 of this Schedule, a
site licence shall not be required for the use of land as a caravan
site by a person travelling with a caravan who brings the caravan
on to the land for a period which includes not more than two nights—
(a) during that period no other caravan is stationed for the
purposes of human habitation on that land or any adjoining
land in the same occupation, and
(b)
if, in the period of twelve months ending with the day on
which the caravan is brought on to the land, the number
of days on which a caravan was stationed anywhere on that
land or the said adjoining land for the purposes of human
habitation did not exceed twenty-eight.
Use of holdings of five acres or more in certain circumstances
3.—(l) Subject to 'the provisions of paragraph 13 of this Schedule,
a site licence shall not be required for the use as a caravan site of
land which comprises, together with any adjoining land which is in
the same occupation and has not been built on, not less than five
acres—
(a) if in the period of twelve months ending with the day on
which the land is used as a caravan site the number of days
on which a caravan was stationed anywhere on that land
or on the said adjoining land for the purposes of human
habitation did not exceed 'twenty-eight, and
(b) if in the said period of twelve months not more than three
caravians were so stationed at 'any one time.
I have personally experienced a Planning officer keeping an eye on a site and gathering the details of when it was being used. He then visited the site to see if any exemptions were being used. He then told the landowner that if she permitted any more overnight stays she would be prosecuted. As well as this he said he would put a section 13 order on the land preventing it being used by exempted organisations and an order under the Town and Country Planning Act that would prevent any development at all. The land was being used by one caravan for one or two nights but the use had gone over the 28 day limit.
The fine is not devastating, but the other sanctions could be catastrophic.
For example he could approach you, and you can say you'll be off in the morning. He can say "it's OK by me, but I may be prosecuted if I allow you to stay for sanctioning a camp without planning on my land" You can counter with "no you can't because I am only here for one night and there is an exemption for stays of up to two nights by a single unit"
You are wrong in your example. The exemption has no effect if it has happened more than 28 days in a calender year by any caravan, (a vehicle towed or self propelled and adapted or constructed for human habitation). The landowner is responsible for keeping records of these stays to show he has not exceeded the 28 day limit.
He may have a defence by puting up signs saying he "No Overnighting" showing that he does not give permission for someone to stay. The sign has no actual legal standing, but does show that he is not allowing the overnighting to happen.
Whether he has given permission or not the number of days cannot exceed 28 days.
This law is not applied to truck drivers who have accomodation in their cabs as this was not possible when the act was drafted in the 1950s. The definition of a caravan would seem to cover such vehicles. Such vehicles would not be welcome on caravan sites so a blind eye is turned.
My opinion is that if it is not equally applied it is bad law. Natural England say the Act is out of date, but that it will not be amended due to the cost of redrafting new legislation.
John