The admin burden and cost of such efforts in the UK alone should be worthy of an award!
My suggestion for a record would be to go right to the very tip top of the UK....set up a way to uplift fuel without touching down...and hover from legal Sunrise to Legal Sunset on the longest "Day" of the Year and then claim the longest duration flight in a helicopter without going anywhere.
Even if you had to pay a landing fee....it would only be the one landing.
Even then....I bet there are some who would get lost along the route.